The notion of Communicative Dynamism was introduced into linguistics by Jan Firbas in 1956 in a study called Poznámky k problematice anglického slovního pořádku s hlediska aktuálního členění větného [Some notes on the problem of English word order from the point of view of functional sentence perspective].[3] Today, the term is firmly established in major academic grammars, as well as in general reference works on language and linguistics: