Osotsi, J. M., P. Balogh, and G. Novotni Dankó. “Heat-No-Service: Reproductive Lifetime Performance of Gilts Inseminated on First Versus Second Observed Estrus in Commercial Piglet Producing Herds”. Acta Agraria Debreceniensis, no. 1, May 2020, pp. 77-80, doi:10.34101/actaagrar/1/3731.