@article{10_4153_CMB_1975_035_4,
     author = {Eng-Ung, Choo},
     title = {Note on a {Subring} of {C} {*(X)(1)}},
     journal = {Canadian mathematical bulletin},
     pages = {177--179},
     year = {1975},
     volume = {18},
     number = {2},
     doi = {10.4153/CMB-1975-035-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-035-4/}
}