Longman Grammar of Spoken and Written English (LGSWE) is a descriptive grammar of English written by Douglas Biber, Stig Johansson, Geoffrey Leech, Susan Conrad, and Edward Finegan, first published by Longman in 1999. It is an authoritative description of modern English, a successor to A Comprehensive Grammar of the English Language (ComGEL) published in 1985 and a predecessor of the Cambridge Grammar of the English Language (CamGEL) published in 2002. The authors and some reviewers consider it a complement rather than a replacement of the former since it follows – with few exceptions (for example in the typology of adverbials) – the grammatical framework and concepts from ComGEL, which is also corroborated by the fact that one of LGSWE's authors, Geoffrey Leech, is also a co-author of ComGEL.[citation needed]