@article{ASNSP_2006_5_5_2_171_0,
     author = {Halverscheid, Stefan and Iannuzzi, Andrea},
     title = {On naturally reductive left-invariant metrics of ${\rm SL}(2,\mathbb {R})$},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {171--187},
     publisher = {Scuola Normale Superiore, Pisa},
     volume = {Ser. 5, 5},
     number = {2},
     year = {2006},
     mrnumber = {2244697},
     zbl = {1150.53015},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2006_5_5_2_171_0/}
}