Verkamp, H.J. & Hammerschlag, N. & Quinlan, J. & Langan, J.A. & Sulikowski, J.A. (2022)
Preliminary investigation of reproductive hormone profiles in the blacktip shark (Carcharhinus limbatus), a placental viviparous species, in southern Florida. Marine and Freshwater Research, 73(4), 520–527
DOI: 10.1071/mf21235

Verkamp, H.J. & Skomal, G. & Winton, M. & Sulikowski, J.A. (2021)
Using reproductive hormone concentrations from the muscle of white sharks Carcharodon carcharias to evaluate reproductive status in the Northwest Atlantic Ocean. Endangered Species Research, 44, 231–236
DOI: 10.3354/esr01109