2kresh D N. Offering High Quality Reference Service on the WebThe Collaboative Digital Reference Service (CDRS) D-Lib Magazine, 2000, 6(6)http: //www. dlib. org/dlib/june00/kresh/0kresh. html
3Collaborative Digital Reference Service. (http://lcweb. loc.goc. gov/rr/digiref/)
4S. Lessick, et al. Interactive Reference Services at UC Irvine: Expanding Reference Service beyond the Reference Desk. (http://www. ala. org/arcl. papehtm/a10. html)