@article{PIM_1975_N_S_18_32_a1,
     author = {R. Bojani\'c and J. M. Elkins},
     title = {Bernstein's {Constant} {And} {Best} {Approximatioin} {On} [0, \ensuremath{\infty})},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {19 },
     publisher = {mathdoc},
     volume = {_N_S_18},
     number = {32},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/PIM_1975_N_S_18_32_a1/}
}