@article{10_4064_aa8370_6_2016,
     author = {L. Singhal},
     title = {Diophantine exponents for standard linear actions of ${\rm SL}_2$ over discrete rings in $\mathbb {C}$},
     journal = {Acta Arithmetica},
     pages = {53--73},
     publisher = {mathdoc},
     volume = {177},
     number = {1},
     year = {2017},
     doi = {10.4064/aa8370-6-2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa8370-6-2016/}
}