Ero?lu, M.P.M.P.Ero?luLee, T.-K.T.-K.LeeTSIU-KWEN LEE2020-12-252020-12-252019https://www.scopus.com/inward/record.url?eid=2-s2.0-85056473186&partnerID=40&md5=6a322c8a5b3a2e8e9d7497613fd750d6https://scholars.lib.ntu.edu.tw/handle/123456789/533274On Asano's theoremjournal article10.1142/S02194988195018102-s2.0-85056473186