I have to match the citations within a document. The citations can be of the forms:
Author names, year; Author names(year); (Author names,year)
For example: 'James et al., 2010', 'James & Juda, 2010', 'James & Juda(2010)','(James & Juda, 2010)'.
I have tried:
Below regular expression will match all the samples which you have given.