@misc{MVBM_1987__39_185523,
     title = {[unknown]},
     journal = {Matematicki vesnik = Bulletin math\'ematique},
     pages = {115},
     publisher = {mathdoc},
     volume = {39},
     year = {1987},
     language = {un},
     url = {https://geodesic-test.mathdoc.fr/item/MVBM_1987__39_185523/}
}