@article{10_14708_cm_v51i2_5315,
     author = {Xhevat Z. Krasniqi},
     title = {Integrability of {Double} {Cosine} {Trigonometric} {Series} with coefficients of bounded variation of second order},
     journal = {Commentationes Mathematicae},
     pages = { 125--139},
     publisher = {mathdoc},
     volume = {51},
     number = {2},
     year = {2011},
     doi = {10.14708/cm.v51i2.5315},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v51i2.5315/}
}