@article{NSJOM_1983_13_Nonea_21,
     author = {Stojakovi\'c Zoran},
     title = {On the spectral of 

 {Mendelsohn} n-tuple systems},
     journal = {Novi Sad Journal of Mathematics},
     pages = {245-249},
     publisher = {mathdoc},
     volume = {13},
     year = {1983},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1983_13_Nonea_21/}
}