@article{201901.0151, doi = {10.20944/preprints201901.0151.v1}, url = {https://doi.org/10.20944/preprints201901.0151.v1}, year = 2019, month = {January}, publisher = {Preprints}, author = {Jong Ryul Kim}, title = {The Line Element Approach for the Geometry of Poincare Disk}, journal = {Preprints} }