An evaluation of boar pheromone spray to aid the stimulation and detection of estrus in small farms in Nepal Shrestha, N.P.; Edwards, S.A.; English, P.R.; Robertson, J.F. Asian-Australasian Journal of Animal Sciences 14(5): 697-700 2001 1011-2367 https://eurekamag.com/research/070/546/070546114.php