@article{oai:soar-ir.repo.nii.ac.jp:00011828,
 author = {Takagi,  Hiroyuki and Koshimizu,  Hironao and Ariizumi,  Hiroaki},
 issue = {1},
 journal = {JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS},
 month = {May},
 note = {J.R. Holub (1988) 1101 introduced the concept of backward shift on Banach spaces. We show that an infinite-dimensional function algebra does not admit a backward shift. Moreover, we define a backward quasi-shift as a weak type of a backward shift, and show that a function algebra A does not admit it, under the assumption that the Choquet boundary of A has at most finitely many isolated points., Article, JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS. 377(1):135-144 (2011)},
 pages = {135--144},
 title = {Backward shifts on function algebras},
 volume = {377},
 year = {2011}
}