@article{10_21136_AM_1993_104541,
     author = {Pr\'ager, Milan},
     title = {The general form of local bilinear functions},
     journal = {Applications of Mathematics},
     pages = {145--157},
     year = {1993},
     volume = {38},
     number = {2},
     doi = {10.21136/AM.1993.104541},
     mrnumber = {1202750},
     zbl = {0785.46034},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1993.104541/}
}