@article{10_4153_CJM_1992_024_1,
     author = {Sakai, Makoto},
     title = {Continuations of {Riemann} {Surfaces}},
     journal = {Canadian journal of mathematics},
     pages = {357--367},
     year = {1992},
     volume = {44},
     number = {2},
     doi = {10.4153/CJM-1992-024-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-024-1/}
}