@article{AIF_1991__41_3_577_0,
     author = {Mantlik, Frank},
     title = {Partial differential operators depending analytically on a parameter},
     journal = {Annales de l'Institut Fourier},
     pages = {577--599},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {41},
     number = {3},
     year = {1991},
     doi = {10.5802/aif.1266},
     zbl = {0729.35011},
     mrnumber = {92m:35026},
     language = {en},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.1266/}
}