Halstead, B.W. & Modglin, F.R. (1950)
A preliminary report on the venom apparatus of the bat-ray, Holorhinus californicus. Copeia, 1950(3), 165–175

Roedel, P.M. & Ripley, W.E. (1950)
California sharks and rays. California Fish and Game Bulletin, 75, 88 pp., 65 figs

Campbell, B. (1951)
The locomotor behavior of spinal elasmobranchs with an analysis of stinging in Urobatis. Copeia, 1951(4), 277–284
DOI: 10.2307/1438312

Herald, E.S. & Ripley, W.E. (1951)
The relative abundance of sharks and bat stingrays in San Francisco Bay. California Fish and Game, 37(3), 315–329

Alexander, C.G. (1953)
Five new species of Acanthobothrium (Cestoda: Tetraphyllidea) from southern California rays. Journal of Parasitology, 39(5), 481–486

Herald, E.S. (1953)
The 1952 shark derbies at Elkhorn Slough, Monterey Bay, and at Coyote Point, San Francisco Bay. California Fish and Game, 39(2), 237–243

Roedel, P.M. (1953)
Official common names of certain marine fishes of California. California Fish and Game, 39(2), 251–262

Baldwin, E. (1960)
Ureogenesis in elasmobranch fishes ? Comparative Biochemistry and Physiology, 1(1), 24–37
DOI: 10.1016/0010-406X(60)90005-0