Rathjen, W.F. & Halstead, B.W. (1969)
Report on two fatalities due to stingrays. Toxicon, 6(4), 301–302
DOI: 10.1016/0041-0101(69)90101-9

Ocampo, R.R. & Halstead, B.W. & Modglin, F.R. (1953)
The microscopic anatomy of the caudal appendage of the spotted eagleray, Aëtobatus narinari (Euphrasen), with special reference to the venom apparatus. The Anatomical Record, 115(1), 87–99
DOI: 10.1002/ar.1091150108

Halstead, B.W. & Bunker, N.C. (1952)
The venom apparatus of the ratfish Hydrolagus colliei. Copeia, 1952(3), 128
DOI: 10.2307/1439692

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