@article{MABA_1989_3_1_a10,
     author = {Bl. Sendov},
     title = {Approximation {Splines}},
     journal = {Mathematica balkanica},
     pages = {106},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {1989},
     url = {http://geodesic.mathdoc.fr/item/MABA_1989_3_1_a10/}
}