Systematics and zoogeography of Maxomys Sody, 1936 (Rodentia: Muridae: Murinae): DNA/DNA hybridization studies of some Borneo-Javan species and allied Sundiac and Australo-Papuan genera.
Evolutionary relationships of Southwestern United States Cottontails (genus Sylvilagus) based on dental morphology.
Systematics and zoogeography of Southeast Asian rodents based on mitochondrial 12S ribosomal gene sequences; a project being undertaken in cooperation with Dr. Juan Carlos Morales, from CERC, the Center for Environmental Research and Conservation of Columbia University.
Mammal Fauna of Guinea Project; a cooperative project between Centers for Disease Control and Prevention (CDC), Institut de Recherche et de Biologie Apliquee de Guinee (IRBAG-Kindia), and the Division of Mammals of the Museum of Southwestern Biology (MSB).