@article{MABA_1998_12_1-2_a13,
     author = {P. Boyvalenkov and S. Nikova},
     title = {Improvements of the {Lower} {Bounds} on the {Size} of {Some} {Spherical} {Designs}},
     journal = {Mathematica balkanica},
     pages = {151},
     publisher = {mathdoc},
     volume = {12},
     number = {1-2},
     year = {1998},
     url = {http://geodesic.mathdoc.fr/item/MABA_1998_12_1-2_a13/}
}