Rickards, K. J., Page, C. P., Lees, P., Gettinby, G., & Cunningham, F. M. In vitro and ex vivo effects of the phosphodiesterase 4 inhibitor, rolipram, on thromboxane production in equine blood. JOURNAL OF VETERINARY PHARMACOLOGY AND THERAPEUTICS, 26(2), 123-130. https://doi.org/10.1046/j.1365-2885.2003.00450.x