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@article{ARM_1979__15_2_a1, author = {Heil, Erhard}, title = {On an oscillation criterion of {Hartman,} {Wintner} and {Potter}}, journal = {Archivum mathematicum}, pages = {81--91}, publisher = {mathdoc}, volume = {15}, number = {2}, year = {1979}, mrnumber = {563141}, zbl = {0378.34026}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1979__15_2_a1/} }
Heil, Erhard. On an oscillation criterion of Hartman, Wintner and Potter. Archivum mathematicum, Tome 15 (1979) no. 2, pp. 81-91. http://geodesic.mathdoc.fr/item/ARM_1979__15_2_a1/