1. Mitochondrial DNA sequence divergence among Schizaphis graminum (Hemiptera: Aphididae) clones from cultivated and non-cultivated hosts: haplotype and host associations;Anstead;Bulletin of Entomological Research,2002
2. A new factor in evolution;Baldwin;American Naturalist,1896
3. Morphological discrimination of a tobacco-feeding form from Myzus persicae (Sulzer) (Hemiptera: Aphididae), and a key to New World Myzus (Nectarosiphon) species;Blackman;Bulletin of Entomological Research,1987