@article{NSJOM_1989_19_2a_8,
     author = {Gilezan 

 Kariolan and Udicki Milo\v{s}},
     title = {Generalized 

 pseudo-boolean functional equations of the third order},
     journal = {Novi Sad Journal of Mathematics},
     pages = {81-91},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1989},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1989_19_2a_8/}
}