EHAVALD, H., A. ŠALEJ, H. CALISKAN, E. AKSAN,
Sylva KARPÍŠKOVÁ, B. KABAK, M. WEISS, E. AGEL a G. KARAHAN. Food process hygiene, effective cleaning and safety in the food industry. In
Microbial contaminants and contamination routes in food industry. Espoo (Finland): VTT, 2007, s. 129-144, 178 s. ISBN 978-951-38-6319-7.