@article{SIGMA_2010_6_a87,
     author = {S. Habib Mazharimousavi and Omar Mustafa},
     title = {Flatland {Position-Dependent-Mass:} {Polar} {Coordinates,} {Separability} and {Exact} {Solvability}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2010},
     volume = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2010_6_a87/}
}