@article{NCD_2008_13_a2,
     author = {Pavel I. Pavlov and Maria M. Nisheva-Pavlova},
     title = {Some {IT} aspects of building digital libraries with learning materials},
     journal = {Review of the National Center for Digitization},
     pages = {17 },
     publisher = {mathdoc},
     volume = {13},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NCD_2008_13_a2/}
}