+
+@InProceedings{G1972,
+ author = {M.~W. Green},
+ title = {Some improvements in non-adaptive sorting algorithms},
+ booktitle = {Proc. 6th Princeton Conference on Information Sciences and Systems (CISS)},
+ pages = {387--391},
+ year = 1972
+}
+
+@inproceedings{V1974,
+ author = {David C. Van Voorhis},
+ title = {An economical construction for sorting networks},
+ booktitle = {Proceedings of the May 6--10, 1974, national computer conference and exposition},
+ series = {AFIPS '74},
+ year = {1974},
+ location = {Chicago, Illinois},
+ pages = {921--927},
+ numpages = {7},
+ url = {http://doi.acm.org/10.1145/1500175.1500347},
+ doi = {http://doi.acm.org/10.1145/1500175.1500347},
+ acmid = {1500347},
+ publisher = {ACM},
+ address = {New York, NY, USA}
+}