Janett F., De Botton D., Burger D., Hässig M., Kähn W., Thun R., The influence of equine somatotropin (EquiGen®) on semen quality and testosterone secretion in the stallion. 10th Conference of the European Society for Domestic Animal Reproduction (ESDAR), Portoroz-Lipica, Slovenia, 2006. Reprod. Dom. Anim. 41: 318, 2006. (Abstract & Poster)
De Botton D., Janett F., Burger D., Imboden I., Kähn W., Thun R. Influence de la somatotropine équine recombinante (EquiGen®) sur la qualité de la semence et la sécrétion de testostérone chez l'étalon. Proceedings 2. Jahrestagung Netzwerk Pferdeforschung Schweiz, Schweiz. Arch. Tierheilk., Band 149, Heft 4, 2007. (Abstract & Poster)
De Botton D., Janett F., Burger D., Imboden I., Kähn W., Thun R., Influence of long-terme treatment with equine somatotropine (EquiGen®) on gonadal function in stallions with poor semen quality, Schweiz. Arch. Tierheilk., Band 150, Heft 4, 157-165, 2008.