@article{NSJOM_1982_12_Nonea_19,
     author = {Stojmenovi\'c Ivan and Stojkovi\'c 

 Vojislav},
     title = {Some proofs by strzctural 

 induction on lists},
     journal = {Novi Sad Journal of Mathematics},
     pages = {235-250},
     publisher = {mathdoc},
     volume = {12},
     year = {1982},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1982_12_Nonea_19/}
}