Dryer, Matthew S.. 2001
The basic position of adverbial subordinators (morphemes indicating specific semantic relationships of adverbial clauses to the main clause, with meanings such as ‘when’, ‘because’, ‘after’, ‘although’, ‘if’) relative to the rest of the subordinate clause. Dryer, Matthew S. (ed.)
Matthew Dryer's Typological Database Buffalo: Department of Linguistics, University at Buffalo. URL (Accessed on 2013-12-09.)