Nancy Pratt-Hawkes

Successful Artificial Insemination of an Asian Elephant at the National Zoological Park

B. Beck, R. Hermes, T. Hildebrandt, 2004 .

Enzyme-immunoassay for the measurement of luteinizing hormone in the serum of African elephants (Loxodonta africana)

Gary W. Miller, Sharon Joseph, Laura H. Graham, 2002 .