Annalisa De Bonis Ugo Vaccaro Optimal Algorithms for Two Group Testing Problems, and New Bounds on Generalized Superimposed Codes. 4673-4680 2006 52 IEEE Transactions on Information Theory 10 http://doi.ieeecomputersociety.org/10.1109/TIT.2006.881740 db/journals/tit/tit52.html#BonisV06