@article{NSJOM_2000_30_3a_2,
     author = {Z. 

 Blazsik and Cs. Hollo and B. Imreh and Cs. Imreh and Z. Kovacs},
     title = {On a 

 well-solvable class of the {PNS} problem},
     journal = {Novi Sad Journal of Mathematics},
     pages = {21-30},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {2000},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2000_30_3a_2/}
}