@article{NSJOM_1976_6_Nonea_3,
     author = {Had\v{z}i\'c Olga},
     title = {Implicit 

 differential equations~ {x=H(f1,(t,x,g1(t,x,x)),{\textellipsis},fn

} (t,x,gn (t,x,x)))x(t0)=x0 in locally 

 convex spaces},
     journal = {Novi Sad Journal of Mathematics},
     pages = {19-23},
     publisher = {mathdoc},
     volume = {6},
     year = {1976},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1976_6_Nonea_3/}
}