@article{TMF_2018_195_3_a7,
     author = {F. Ahmed},
     title = {Axisymmetric pure radiation space--time with causality-violating geodesics},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {483--490},
     publisher = {mathdoc},
     volume = {195},
     number = {3},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2018_195_3_a7/}
}