@article{NSJOM_1983_13_Nonea_33,
     author = {To\v{s}i\'c Ratko},
     title = {A counterfeit coins 

 problem},
     journal = {Novi Sad Journal of Mathematics},
     pages = {361-365},
     year = {1983},
     volume = {13},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1983_13_Nonea_33/}
}