E. Rytel, A. PÄksa, A. Tajner-Czopek, A. Kita, T. ZiÄba, and A. Gryszkin, “EFFECT OF ADDITION OF PROTEIN PREPARATIONS ON THE QUALITY OF EXTRUDED MAIZE EXTRUDATES”, J microb biotech food sci, vol. 2, no. special issue 1, pp. 1776–1790, Feb. 2013.