The 17th Spoken Language Symposium Kei Sawada, Kei Hashimoto, Keiichiro Oura, Yoshihiko Nankaku, and Keiichi Tokuda,
"Evaluation of text-to-speech system construction for unknown-pronunciation languages,"
IEICE Technical Report, vol.115, no.346, SP2015-80, pp.93-98, 2015.12