@article{JOLT_2021_31_3_a8,
     author = {Mohamed Boucetta and Oumaima Tibssirte},
     title = {Classification of {Einstein} {Lorentzian} {3-Nilpotent} {Lie} {Groups} with {1-Dimensional} {Nondegenerate} {Center}},
     journal = {Journal of Lie Theory},
     pages = {811--832},
     year = {2021},
     volume = {31},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2021_31_3_a8/}
}