@article{KJM_2003_25_a13,
     author = {Jovanka Niki\'c},
     title = {Conditions for invariant submanifold of a manifold with the (fi, psi, eta, {G)-structure}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {147 },
     publisher = {mathdoc},
     volume = {25},
     year = {2003},
     zbl = {1053.53013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2003_25_a13/}
}