@article{MS2_1967__21_166002,
     author = {Masako Izumi and Shin-Ichi Izumi},
     title = {On {Some} {Trigonometrical} {Polynomials.}},
     journal = {Mathematica Scandinavica},
     pages = {38--44},
     publisher = {mathdoc},
     volume = {21},
     year = {1967},
     zbl = {0165.39103},
     url = {http://geodesic.mathdoc.fr/item/MS2_1967__21_166002/}
}