Erialavalik õigustasEhavald, HelenTeaduselt tootmisele : toiduõpetus ja tootearendus - suunad ja perspektiivid2006 / lk. 64-65 : portr

Food process hygiene, effective cleaning and safety in the food industryEhavald, Helen; Šalej, Ajda; Caliskan, HulyaMicrobial Contaminants & Contamination Routes in Food Industry : 1st open seminar arranged by SAFOODNET - Food Safety and Hygiene Networking within New Member States and Associated Candidate Countries; FP6-022808-2006 : Espoo, Finland, January 22-23, 20072007 / p. 129-144

Hygiene survey in Estonian dairies and pathogen analysis of authentic samplesEhavald, HelenMicrobial Contaminants & Contamination Routes in Food Industry : 1st open seminar arranged by SAFOODNET - Food Safety and Hygiene Networking within New Member States and Associated Candidate Countries; FP6-022808-2006 : Espoo, Finland, January 22-23, 20072007 / p. 98

Mapping of spoilage indicators and some pathogenic microbes in three Estonian dairiesSalo, Satu; Ehavald, Helen; Veskus, Tiina; Priha, O.; Vakra, L.; Vokk, Raivo; Raaska, L.; Wirtanen, G.Journal of food protection2005 / A, p. 133-134

Microbial surveys in Estonian dairiesSalo, Satu; Ehavald, Helen; Raaska, L.; Vokk, Raivo; Wirtanen, G.LWT - food science and technology2006 / 5, p. 460-471

Microbiological risk assessment and preventative actions in bakery and beverage industries in Estonia, Slovenia and TurkeyBas, Duygu; Ehavald, Helen; Veskus, TiinaRisk assessment of microbial problems and preventative actions in food industry2008 / p. 149-166