@article{TMF_1972_11_3_a2,
     author = {Nguyen Van Hieu},
     title = {Essen tially nonlinear scalar fields and the geometry of space-time},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {293--300},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1972_11_3_a2/}
}