Варнене, Регина, and Мария Прокопчик. “Information Languages of the Automatic Information Retrieval System for Electrochemical and Chemical Coatings”. Knygotyra, vol. 18, no. 11-2, Dec. 1985, pp. 72–80, https://www.journals.vu.lt/knygotyra/article/view/34368.