Olga Fischer (Dutch pronunciation: [ˈɔlɣaː ˈfɪɕər]; born 5 April 1951) is a Dutch linguist and an expert on the English language. She is Professor Emerita of Germanic Linguistics at the University of Amsterdam and former president of the International Society for the Linguistics of English. Fischer has published extensively in the area of English historical linguistics, especially historical syntax, where her interests in syntactic change relate to changes in word order, comparison with developments in other West Germanic languages, grammaticalization, and the interaction between grammaticalization and iconicity in language change. Source: Wikipedia (en)