@article{10_4153_CJM_1974_027_5,
     author = {Chen, Yi},
     title = {A {Characterization} of {Some} {Geometries} of {Chains}},
     journal = {Canadian journal of mathematics},
     pages = {257--272},
     year = {1974},
     volume = {26},
     number = {2},
     doi = {10.4153/CJM-1974-027-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-027-5/}
}