@article{MV_1965_17_4_a4,
     author = {O. P. Goyal},
     title = {Lacunary {Fourier} series},
     journal = {Matemati\v{c}ki vesnik},
     pages = {251 },
     year = {1965},
     volume = {17},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/MV_1965_17_4_a4/}
}