@article{MM2_1972__7_154115,
     author = {Heinz Fiedler},
     title = {Zur {Regularit\"at} selbstadjungierter {Randwertaufgaben.}},
     journal = {Manuscripta mathematica},
     pages = {185--196},
     publisher = {mathdoc},
     volume = {7},
     year = {1972},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MM2_1972__7_154115/}
}