@article{10_4153_CJM_2012_053_4,
     author = {Zhao, Wei and Shen, Yibing},
     title = {A {Universal} {Volume} {Comparison} {Theorem} for {Finsler} {Manifolds} and {Related} {Results}},
     journal = {Canadian journal of mathematics},
     pages = {1401--1435},
     year = {2013},
     volume = {65},
     number = {6},
     doi = {10.4153/CJM-2012-053-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2012-053-4/}
}