@article{NSJOM_1980_10_Nonea_26,
     author = {U\v{s}an Janez and \v{S}e\v{s}elja Branimir},
     title = {On generalized implication 

 algebras},
     journal = {Novi Sad Journal of Mathematics},
     pages = {209-213},
     publisher = {mathdoc},
     volume = {10},
     year = {1980},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1980_10_Nonea_26/}
}