【LATIN CAPITAL LETTER Y WITH LOOP - fileformat.info】
http://www.fileformat.info/info/unicode/char/1efe/...
【N3027 - Proposal to add medievalist characters to the UCS】
http://std.dkuug.dk/JTC1/SC2/WG2/docs/n3027.pdf
【A Welsh grammar, historical and comparative : phonology and accidence (1913)】
http://www.archive.org/details/welshgrammarhist00j...