@article{10_4153_CJM_1994_057_3,
     author = {Lari-Lavassani, Ali and Lu, Yung-Chen},
     title = {The {Stability} {Theorems} for {Subgroups} of and},
     journal = {Canadian journal of mathematics},
     pages = {995--1006},
     year = {1994},
     volume = {46},
     number = {5},
     doi = {10.4153/CJM-1994-057-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1994-057-3/}
}