@article{10_2298_PIM141114001V,
     author = {Biljana Vujo\v{s}evi\'c},
     title = {The {Index} of {Product} {Systems} of {Hilbert} {Modules:} {Two} {Equivalent} {Definitions}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {49 },
     publisher = {mathdoc},
     volume = {_N_S_97},
     number = {111},
     year = {2015},
     doi = {10.2298/PIM141114001V},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/PIM141114001V/}
}