1. Card, C.E., Manning S.T., et al., 1997. Pregnancies from imipramine and xylazine-induced ex copula ejaculation in a disabled horse. Can. Vet. J. 38, 171–174.
2. Chemical ejaculation of stallions after administration of oral imipramine followed by intravenous xylazine;Johnston;Proc. AAEP,1998
3. Manual stimulation collection of semen from stallions: Training time, sexual behavior and semen;McDonnell;Theriogenology,1990
4. Xylazine-induced ex copula ejaculation in stallions;McDonnell;Theriogenology,1991
5. Imipramine and xylazine-induced ex copula ejaculation in stallions;McDonnell;Theriogenology,1994