@article{NSJOM_1990_20_2a_2,
     author = {\v{S}e\v{s}elja 

 Branimir and Tepav\v{c}evi\'c Andreja},
     title = {Special elements of the 

 lattice and lattice identities},
     journal = {Novi Sad Journal of Mathematics},
     pages = {21-29},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1990},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1990_20_2a_2/}
}