Olbrych, K., Urbańska, K., Krzysiak, M. ., Szara, T., & Bartyzel, B. J. (2013). Evaluation of vaginal swabs in European bison (Bison bonasus L.) – preliminary results. European Bison Conservation Newsletter, 6, 107–114. Retrieved from http://ojs.wisent.org/index.php/czasopismo/article/view/102