@article{TAM_1997_23_1_a8,
     author = {Dragi Radojevi\'c},
     title = {The metric which allows the pure  radiation field},
     journal = {Theoretical and applied mechanics},
     pages = {151 },
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAM_1997_23_1_a8/}
}