@article{MV_1969_21_4_a15,
     author = {D. F. Dawson},
     title = {Variation properties  of sequences},
     journal = {Matemati\v{c}ki vesnik},
     pages = {437 },
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1969},
     url = {http://geodesic.mathdoc.fr/item/MV_1969_21_4_a15/}
}