@article{NSJOM_2008_38_2a_11,
     author = {V. Marenitch},
     title = {Geodesic lines in $\widetilde{SL_2(R)}$ and $Sol$},
     journal = {Novi Sad Journal of Mathematics},
     pages = {91-104},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2008_38_2a_11/}
}