Feng X, Rich SM, Tzipori S, Widmer G.  2002.  Experimental evidence for genetic recombination in the opportunistic pathogen Cryptosporidium parvum.. Mol Biochem Parasitol. 119(1):55-62.

Feng X, Rich SM, Akiyoshi D, Tumwine JK, Kekitiinwa A, Nabukeera N, Tzipori S, Widmer G.  2000.  Extensive polymorphism in Cryptosporidium parvum identified by multilocus microsatellite analysis.. Appl Environ Microbiol. 66(8):3344-9.