@article{JRAM_1975__0274_0275_151589,
     author = {Charles J. Parry},
     title = {Class number relations in pure sextic fields.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {360--375},
     publisher = {mathdoc},
     volume = {0274_0275},
     year = {1975},
     zbl = {0315.12006},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1975__0274_0275_151589/}
}