M. Kwiecień, A. Winiarska-Mieczan, J. V. Piedra, B. Bujanowicz-Haraś, and A. Chałabis-Mazurek, “Effects of copper glycine chelate on liver and faecal mineral concentrations, and blood parameters in broilers”, AFSci, vol. 24, no. 2, pp. 92–103, Jun. 2015.