@article{JMAG_2020_16_2_a5,
     author = {Noura Sidhoumi},
     title = {Ricci solitons of four-dimensional {Lorentzian} {Damek{\textendash}Ricci} spaces},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {190--199},
     year = {2020},
     volume = {16},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2020_16_2_a5/}
}