E. Kotzias-Bandeira, D. Waberski, K. F. Weitzw, and M. B. P. Barreto, “Boar semen pre-diluted or freezing with coconut water in natura after three different pre-treatments”, Braz. J. Vet. Res. Anim. Sci., vol. 36, no. 3, pp. 149–153, Jan. 1999, doi: 10.1590/S1413-95961999000300008.