@article{PIM_1981_N_S_30_44_a7,
     author = {F. Na{\dj} {\DJ}er{\dj}i},
     title = {On {Subspaces} of {Riemann-Otsuki} {Space}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {53 },
     year = {1981},
     volume = {_N_S_30},
     number = {44},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1981_N_S_30_44_a7/}
}