@incollection{2927959, title = "Designing an Integrated Digital Library Framework to Support Multiple Heterogeneous Collections", author = "George Pyrounakis and Kostas Saidis and Mara Nikolaidou and Irene Lourdi", booktitle = "Research and Advanced Technology for Digital Libraries", publisher = "Springer Berlin Heidelberg", year = "2004", pages = "26--37", doi = "10.1007/978-3-540-30230-8_3" }