@article{MV_1952_4_1_a0,
     author = {{\DJ}. Kurepa},
     title = {On a definition and notation of matrices. {On} a kind of switch matrices},
     journal = {Matemati\v{c}ki vesnik},
     pages = {1 },
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1952},
     url = {http://geodesic.mathdoc.fr/item/MV_1952_4_1_a0/}
}