@article{MET_1964__8_175226,
     author = {W. Uhlmann},
     title = {Mittelwerte und ihre {Sch\"atzfunktionen} bei zirkul\"aren zuf\"alligen {Variablen.}},
     journal = {Metrika},
     pages = {25--47},
     publisher = {mathdoc},
     volume = {8},
     year = {1964},
     zbl = {0118.14303},
     url = {http://geodesic.mathdoc.fr/item/MET_1964__8_175226/}
}