Hantash, Tariq M., et al. “Pharmacokinetics and Bioequivalence of Doxycycline (Providox® and Doxyvet 0-50 S&Reg;) Oral Powder Formulations in Chickens”. International Journal of Poultry Science, vol. 7, no. 2, Jan. 2008, pp. 161–164, https://doi.org/10.3923/ijps.2008.161.164.