@article{702402,
     title = {Preface},
     booktitle = {Nonlinear Analysis, Function Spaces and Applications},
     series = {GDML\_Books},
     publisher = {BSB B. G. Teubner Verlagsgesellschaft},
     address = {Leipzig},
     year = {1979},
     pages = {2-2},
     url = {http://dml.mathdoc.fr/item/702402}
}

Fučík, Svatopluk; Kufner, Alois. Preface, dans Nonlinear Analysis, Function Spaces and Applications, GDML_Books,  (1979), p. 2. http://gdmltest.u-ga.fr/item/702402/