@article{AFM_2016_41_1_a1,
     author = {Xiaojun Huang and Hongjun Liu and Jinsong Liu},
     title = {Local properties of quasihyperbolic mappings in metric spaces},
     journal = {Annales Fennici Mathematici},
     pages = {23--40},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {2016},
     doi = {10.5186/aasfm.2016.4106},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2016.4106/}
}