[NTG-context] bib module: \cite with page numbers

Hello, Is it possible to get page numbers (or a chapter number) displayed in a citation, e.g. \cite[authoryears]{pp. 163-170}[davidson2001] and see \cite[authoryear]{chap. 3}[davidson2001] would format as: (Davidson, 2001, pp. 163-170) and see Davidson (2001) chap. 3 Thanks for any clue, David