@article{AFM_1977_3_2_a8,
     author = {Veikko T. Purmonen},
     title = {Zur {Korrekheit} elliptischer fastlinear gemischter {Randwertaufgaben} in {R2}},
     journal = {Annales Fennici Mathematici},
     pages = {277--300},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1977},
     doi = {10.5186/aasfm.1977.0322},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1977.0322/}
}