@article{10_4153_CJM_2006_027_4,
     author = {Yu, Xiaoxiang},
     title = {Centralizers and {Twisted} {Centralizers:} {Application} to {Intertwining} {Operators}},
     journal = {Canadian journal of mathematics},
     pages = {643--672},
     year = {2006},
     volume = {58},
     number = {3},
     doi = {10.4153/CJM-2006-027-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2006-027-4/}
}