Burand JP, Kim W, Afonso CL, Tulman ER, Kutish GF, Lu Z, Rock DL.  2012.  Analysis of the genome of the sexually transmitted insect virus Helicoverpa zea nudivirus 2.. Viruses. 4(1):28-61.

Rich SM, Ferreira MU, Ayala FJ.  2000.  The origin of antigenic diversity in Plasmodium falciparum.. Parasitol Today. 16(9):390-6.