@article{10_4153_S0008414X23000056,
     author = {Cort\'es, Vicente and Krusche, David},
     title = {Classification of generalized {Einstein} metrics on three-dimensional {Lie} groups},
     journal = {Canadian journal of mathematics},
     pages = {2038--2095},
     year = {2023},
     volume = {75},
     number = {6},
     doi = {10.4153/S0008414X23000056},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X23000056/}
}