References
- Gilbarg , S. , David , Trudinger and Neil . 1983 . Elliptic Partial Differential Equations of Second Order , Berlin : Springer .
- Mejak and George . 1990 . private communication
- Mejak and George . 1991 . Mixed Boundary Value Problem for Singular Elliptic Differential Equations of Second Order . IMFM Preprint Series , 329
- Wirsching and Giinther . 1990 . Konform kompakte Metriken mit konstantem negativen Krummungs-skalar , Katholische Universitat Eichstatt .