@article{ZR_1997_6_14_a0,
     author = {Neda Bokan and Novica Bla\v{z}i\'c},
     title = {Foreword},
     journal = {Zbornik radova},
     publisher = {mathdoc},
     volume = {6},
     number = {14},
     year = {1997},
     url = {http://geodesic.mathdoc.fr/item/ZR_1997_6_14_a0/}
}