@article{AM2_1986__31_137157,
     author = {Peter Semrl},
     title = {On quadratic and sesquilinear functionals.},
     journal = {Aequationes mathematicae},
     pages = {184--190},
     publisher = {mathdoc},
     volume = {31},
     year = {1986},
     zbl = {0615.46043},
     url = {http://geodesic.mathdoc.fr/item/AM2_1986__31_137157/}
}