Billings, D. A conceptual model of correspondence course completion. // American Journal of Distance Education 2, 2(1988), 23-35.   

CARNET Conferences. http:// www.carnet.hr/cuc (2001-12-19) 

Croatian Ministry of Science and Technology. Virtual University project. http://www.mzt.hr/virtus (2001-12-18) 

Hartley, R. Area health services as learning organisations: the rural experience. // Australian Journal of Rural Health 8, 2000, 77-80.

Kember, D. An illustration, with case studies of a linear process model of drop-out from distance education. // Distance Education 10, 2(1989), 196-212.

Kinnaman, D. E. The death of distance. // Curriculum Administrator 35, 2(1999)  MasterFILE Premier on-line EBSCO Publishing http://epnet.com/ehost/login.html (2001-12-17)

Lawton, S. Supportive learning in distance education. // Journal of Advanced Nursing 25, 1997, 1076-1083.

Lebowitz, G. Library services to distant students: an equity issue. // Journal of Academic Librarianship 23, 4(1997). MasterFILE Premier on-line EBSCO Publishing http://epnet.com/ehost/login.html (2001-12-17)

Libraries in the Digital Age. International Courses and Conferences.  http://www.ffzg.hr/infoz/lida (2001-12-18)

Luther, J. Distance learning and the digital library. // Educom Review 33, 4(1998).  MasterFILE Premier on-line EBSCO Publishing http://epnet.com/ehost/login.html (2001-12-17)

Reeve, D.; Hardwick, S.; Kemp, K.; Ploszajska, T. Delivering geography courses internationally. // Journal of Geography in Higher Education 24, 2000.  MasterFILE Premier on-line EBSCO Publishing http://epnet.com/ehost/login.html (2001-12-17)

Rudjer Boskovic Institute’s web site. www.nippur.irb (2001-12-18)

Van den Branden, J.; Lambert, J. Cultural issues related to transnational Open and Distance Learning in universities: a European problem? // British Journal of Educational Technology 30, 3(1999).   MasterFILE Premier on-line EBSCO Publishing http://epnet.com/ehost/login.html (2001-12-17)

Varlejs, Jana. North American Models of Internet-Delivered Continuing Professional Education: Are They Exportable?. // Delivering lifelong continuing professional education across space and time / The Fourth World Conference on Continuing Professional Education ... / ed. by B. Wools and B. E. Sheldon. Muenchen : Saur, 2001. Pp. 9-15.

Woolls, Blanche. Building a Plan to Deliver Lifelong Continuing Professional Education Across Space and Time. // Delivering lifelong continuing professional education across space and time / The Fourth World Conference on Continuing Professional Education ... / ed. by B. Wools and B. E. Sheldon. Muenchen : Saur, 2001. Pp. 16-25.