Bradley A. Belstra

Belstra, B. A., Flowers, W. L., Croom, W. J., DeGroot, J., & See, M. T. (2005). Urinary excretion of collagen degradation markers by sows during postpartum uterine involution. ANIMAL REPRODUCTION SCIENCE, 85(1-2), 131–145. https://doi.org/10.1016/j.anireprosci.2004.04.035

Belstra, B. A., Flowers, W. L., & See, M. T. (2004). Factors affecting temporal relationships between estrus and ovulation in commercial sow farms. ANIMAL REPRODUCTION SCIENCE, 84(3-4), 377–394. https://doi.org/10.1016/j.anireprosci.2004.02.005