Split-time artificial insemination in beef cattle: II. Comparing pregnancy rates among nonestrous heifers based on administration of GnRH at AI

B.E. Bishop, J.M. Thomas, J.M. Abel, S.E. Poock, M.R. Ellersieck, M.F. Smith, and D.J. Patterson 

Theriogenology 87 (2017) 229–234