an Entity references as follows:
Elmar Emil Leppik, earlier Lepik (1898–1978) was an Estonian mycologist and theoretical biologist. He established a mycological herbarium and library at the University of Tartu. His birth date in 1898 has been given variously as 3 or 4 October or as 3 December, he died 4 November 1978 in Maryland. The standard author abbreviation Leppik is used to indicate this person as the author when citing a botanical name.