@article{NSJOM_1972_2_Nonea_1,
     author = {Prvanovi\'c Mileva},
     title = {On some 

 {semi-Chebishev} compositions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {7-21},
     publisher = {mathdoc},
     volume = {2},
     year = {1972},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1972_2_Nonea_1/}
}