Leon Bobrowski Mariusz Buzun Karol Przybszewski Integration of Public Information at the Regional Level - Challenges and Opportunities. 529-533 http://dx.doi.org/10.1007/978-3-540-30078-6_92 2004 conf/egov/2004 EGOV db/conf/egov/egov2004.html#BobrowskiBP04