@inproceedings{vowelenhancementinearlystagespanish,
  title = {Vowel Enhancement in Early Stage Spanish Esophageal Speech Using Natural Glottal Flow Pulse and Vocal Tract Frequency Warping},
  author = {Rizwan Ishaq and Dhanananjaya Gowda and Paavo Alku and Begonya Garcia Zapirain},
  year = {2015},
  booktitle = {WS 2015 9},
  url = {https://aclanthology.org/W15-5110},
}