@article{NCD_2011_18_1_a6,
     author = {Diana Danova and Maria Kumichin},
     title = {Music {Folklore} {Archive} {Collection} at the {Institute} of {Art} {Studies,}  {Bas} in {Sofia,} {Bulgaria,} and {Its} {Restoration} and {Digitization}},
     journal = {Review of the National Center for Digitization},
     pages = {59 - 66},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/NCD_2011_18_1_a6/}
}