More 3rd party references

refs.bib

@@ -3,16 +3,45 @@
 @String{ieee_cs         = "IEEE Computer Society"}
 @String{ieee_cs_ca_adr  = "Los Alamitos, CA, USA"}
 
-@article{sauter2013python,
-  author    = {Sauter, Nicholas K. and Hattne, Johan and Grosse-Kunstleve, Ralf W. and Echols, Nathaniel},
-  title     = {{New Python-based methods for data processing}},
-  journal   = {Acta Crystallographica Section D},
-  year      = {2013},
-  month     = {Jul},
-  volume    = {69},
-  number    = {7},
-  pages     = {1274--1282},
-  doi       = {10.1107/S0907444913000863},
+
+@article{dubach2012compiling,
+ author     = {Dubach, Christophe and Cheng, Perry and Rabbah, Rodric and Bacon, David F. and Fink, Stephen J.},
+ title      = {Compiling a High-level Language for GPUs: (via Language Support for Architectures and Compilers)},
+ journal    = {SIGPLAN Not.},
+ volume     = {47},
+ number     = {6},
+ month      = {6},
+ year       = {2012},
+ issn       = {0362-1340},
+ pages      = {1--12},
+ doi        = {10.1145/2345156.2254066},
+ publisher  = acm,
+ address    = acm_adr,
+}
+
+@article{hormati2011sponge,
+ author     = {Hormati, Amir H. and Samadi, Mehrzad and Woh, Mark and Mudge,
+              Trevor and Mahlke, Scott},
+ title      = {Sponge: Portable Stream Programming on Graphics Engines},
+ journal    = {SIGARCH Comput. Archit. News},
+ volume     = {39},
+ issue      = {1},
+ month      = {3},
+ year       = {2011},
+ issn       = {0163-5964},
+ pages      = {381--392},
+ numpages   = {12},
+ doi        = {http://doi.acm.org/10.1145/1961295.1950409},
+ publisher  = acm,
+ address    = acm_adr,
+}
+
+@inproceedings{liu2013largevolumes,
+ author    = {Liu, X. and Boons, S. and Sasov, A.},
+ title     = {{Strategies for GPU-based conebeam CT reconstruction for very large data volumes}},
+ booktitle = {Proc. of 12th Int. Meeting Fully 3D Image Reconstruction in Radiology and Nuclear Medecine},
+ year      = {2013},
+ pages     = {529--532},
 }
 
 @article{mader2011highthroughput,
@@ -27,54 +56,80 @@
   doi       = {10.1107/S0909049510047370},
 }
 
+@article{maier2013conrad,
+  author    = {Maier, A. and Hofmann, H. and Berger, M. and Fischer, P. and Schwemmer, C. and Wu, H. and Mueller, K. and Hornegger, J. and Choi, J. and Riess, C. and Keil, A. and Fahrig, R.},
+  title     = {{CONRAD—A software framework for cone-beam imaging in radiology}},
+  journal   = {Medical Physics},
+  year      = {2013},
+  volume    = {40},
+  number    = {2},
+  pages     = {111914-1--111914-8},
+  doi       = {10.1118/1.4824926},
+}
+
+@article{mirone2014pyhst2,
+  author    = {Mirone, Alessandro and Brun, Emmanuelle and Gouillart, Emmanuelle and Tafforeau, Paul and Kieffer, Jerome},
+  title     = {{The PyHST2 hybrid distributed code for high speed tomographic reconstruction with iterative reconstruction and a priori knowledge capabilities}},
+  journal   = {Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms},
+  year      = {2014},
+  month     = {Apr},
+  volume    = {324},
+  pages     = {41--48},
+  doi       = {10.1016/j.nimb.2013.09.030},
+}
+
+
 @article{marone2012regridding,
  author     = {Marone, F. and Stampanoni, M.},
  title      = {{Regridding reconstruction algorithm for real-time tomographic imaging}},
  journal    = {Journal of Synchrotron Radiation},
  year       = {2012},
  volume     = {19},
- pages      = {1029-1037},
+ pages      = {1029--1037},
  doi        = {10.1107/S0909049512032864},
 }
 
-@inproceedings{liu2013largevolumes,
- author    = {Liu, X. and Boons, S. and Sasov, A.},
- title     = {{Strategies for GPU-based conebeam CT reconstruction for very large data volumes}},
- booktitle = {Proc. of 12th Int. Meeting Fully 3D Image Reconstruction in Radiology and Nuclear Medecine},
- year      = {2013},
- pages     = {529-532},
+@article{palenstijn2011art,
+ author     = {Palenstij, W. J. and Batenburg, K. J. and Sijbers, J.},
+ title      = {{Performance improvements for iterative electron tomography reconstruction using graphics processing units (GPUs)}},
+ journal    = {Journal of Structural Biology},
+ year       = {2011},
+ volume     = {176},
+ number     = {2},
+ pages      = {250--253},
+ doi        = {10.1016/j.jsb.2011.07.017},
 }
 
-@article{hormati2011sponge,
- author     = {Hormati, Amir H. and Samadi, Mehrzad and Woh, Mark and Mudge,
-              Trevor and Mahlke, Scott},
- title      = {Sponge: Portable Stream Programming on Graphics Engines},
- journal    = {SIGARCH Comput. Archit. News},
- volume     = {39},
- issue      = {1},
- month      = {3},
- year       = {2011},
- issn       = {0163-5964},
- pages      = {381--392},
- numpages   = {12},
- doi        = {http://doi.acm.org/10.1145/1961295.1950409},
- publisher  = acm,
- address    = acm_adr,
+@inproceedings{palenstijn2013astra,
+ author     = {Palenstij, W. J. and Batenburg, K. J. and Sijbers, J.},
+ title      = {{The ASTRA Tomography Toolbox}},
+ booktitle  = {Proc. of 13th Int. Conf. on Computational and Mathematical Methods in Science and Engineering},
+ year       = {2013},
+ pages      = {1139--1145},
+ volume     = {3},
 }
 
-@article{dubach2012compiling,
- author     = {Dubach, Christophe and Cheng, Perry and Rabbah, Rodric and Bacon, David F. and Fink, Stephen J.},
- title      = {Compiling a High-level Language for GPUs: (via Language Support for Architectures and Compilers)},
- journal    = {SIGPLAN Not.},
- volume     = {47},
- number     = {6},
- month      = {6},
- year       = {2012},
- issn       = {0362-1340},
- pages      = {1--12},
- doi        = {10.1145/2345156.2254066},
- publisher  = acm,
- address    = acm_adr,
+@article{rit2014rtk,
+ author     = {Rit, S. and Vila Oliva, M. and Brousmiche, S. and Labarbe, R. and Sarrut, D. and Sharp, G. C.},
+ title      = {{The Reconstruction Toolkit (RTK), an open-source cone-beam CT reconstruction toolkit based on the Insight Toolkit (ITK)}},
+ journal    = {Journal of Physics: Conference Series},
+ year       = {2014},
+ volume     = {489},
+ pages      = {1--4},
+ doi        = {doi:10.1088/1742-6596/489/1/012079},
+}
+
+
+@article{sauter2013python,
+  author    = {Sauter, Nicholas K. and Hattne, Johan and Grosse-Kunstleve, Ralf W. and Echols, Nathaniel},
+  title     = {{New Python-based methods for data processing}},
+  journal   = {Acta Crystallographica Section D},
+  year      = {2013},
+  month     = {Jul},
+  volume    = {69},
+  number    = {7},
+  pages     = {1274--1282},
+  doi       = {10.1107/S0907444913000863},
 }
 
 @article{zhang2011gstream,