Matikevičienė, Veslava, et al. “DEGRADATION OF KERATIN CONTAINING WASTES BY BACTERIA WITH KERATINOLYTIC ACTIVITY”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, vol. 1, Aug. 2015, pp. 284-9, https://doi.org/10.17770/etr2009vol1.1107.