@article{10_4064_sm_117_3_225_242,
     author = {S. -L. Qiu and  },
     title = {Submultiplicative properties of the $\ensuremath{\varphi}_{K}$-distortion function},
     journal = {Studia Mathematica},
     pages = {225--242},
     publisher = {mathdoc},
     volume = {117},
     number = {3},
     year = {1995},
     doi = {10.4064/sm-117-3-225-242},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-117-3-225-242/}
}