@article{10_1017_S001708951400010X,
     author = {SUN, ZONGLIANG},
     title = {ON {LENGTH} {DISTORTIONS} {WITH} {RESPECT} {TO} {QUADRATIC} {DIFFERENTIAL} {METRICS}},
     journal = {Glasgow mathematical journal},
     pages = {681--689},
     year = {2014},
     volume = {56},
     number = {3},
     doi = {10.1017/S001708951400010X},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S001708951400010X/}
}