@article{MM2_1975__16_154349,
     author = {Frieder Lewerenz},
     title = {Nichtlineare {Eigenwertprobleme} mit zwei {Parametern.}},
     journal = {Manuscripta mathematica},
     pages = {363--372},
     publisher = {mathdoc},
     volume = {16},
     year = {1975},
     zbl = {0324.47035},
     url = {http://geodesic.mathdoc.fr/item/MM2_1975__16_154349/}
}