"Jin-ichi;Itoh|Kazuyoshi;Kiyohara|","Cut loci and conjugate loci on Liouville surfaces","Manuscripta Mathematica","0025-2611","2011/09","136","1-2","115","141","","","000293140000005","https://ousar.lib.okayama-u.ac.jp/46828","10.1007/s00229-011-0433-1"