@article{7a87b675cb704c0f80194ec10ee8fed9,
title = "An elementary proof for that all unoriented spanning surfaces of a link are related by attaching/deleting tubes and m{\"o}bius bands",
abstract = "Gordon and Litherland showed that all compact, unoriented, possibly non-orientable surfaces in S3 bounded by a link are related by attaching/deleting tubes and half twisted bands. In this note we give an elementary proof for this result.",
keywords = "Reidemeister moves, S*-equivalence, Spanning surface, checkerboard surface",
author = "Akira Yasuhara",
note = "Funding Information: The author is partially supported by a Grant-in-Aid for Scientific Research (C) (#23540074) of the Japan Society for the Promotion of Science.",
year = "2014",
month = jan,
doi = "10.1142/S0218216514500047",
language = "English",
volume = "23",
journal = "Journal of Knot Theory and its Ramifications",
issn = "0218-2165",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "1",
}