@article{NSJOM_1999_29_3a_33,
     author = {R. 

 \v{S}tuli\'c and Z. Jandri\'c and Z. Milojevi\'c},
     title = {Polar 

 cylindres of surfaces of revolution: {Contour} line determination},
     journal = {Novi Sad Journal of Mathematics},
     pages = {349-356},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1999},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1999_29_3a_33/}
}