Perceptual and Ultrasound Articulatory Training Effects on English L2 Vowels Production by Italian Learners
 C. T. Best, M. D. Tyler, “Nonnative and Second Language Speech Perception: Commonalities and Complementarities”, in Second Language Speech Learning: The Role of Language Experience in Speech Perception and Production, Amsterdam, John Benjamins, 2007, pp. 13-34.
 J. S. Logan, S. E. Lively, D. B. Pisoni, “Training Japanese listeners to identify English /r/ and /l/: A first report”, in The Journal of the Acoustical Society of America, vol. 89(2), 1991, pp. 874-886.
 A. R. Bradlow, D. B. Pisoni, R. Akahane-Yamada, Y. I. Tohkura, “Training Japanese listeners to identify English /r/ and /l/. IV: some effects of perceptual learning on speech production”, in The Journal of the Acoustical Society of America, vol. 101(4), 1997, pp. 2299-2310.
 N. Kartushina, A. Hervais-Adelman, U. H. Frauenfelder, & N. Golestani, “The effect of phonetic production training with visual feedback on the perception and production of foreign speech sounds”, Journal of Acoustical Society of America, 138(2), 2015, pp. 817-832.
 C. Pillot-Loiseau, T. K.Antolík, T. Kamiyama, “Contribution Of Ultrasound Visualization To Improving The Production Of The French /y/-/u/ Contrast By Four Japanese Learners”, in Phonetics, Phonology, Languages In Contact. Contact: Varieties, Multilingualism, Second Language Learning, 2013, pp. 86-89.
 S. M. Wilson, B. Gick, “Ultrasound Technology and Second Language Acquisition Research”, in Proceedings of the 8th Generative Approaches to Second Language Acquisition Conference, 2006, pp. 148–152.
 A. M. Schmidt, & J. Beamer, “Electropalatography treatment for training Thai speakers of English”, in Journal of Clinical Linguistics & Phonetics, vol. 12 (5), 1998, pp.389-403.
 A. Suemitsu, & J. Dang, T. Ito, M. Tiede, “A real-time articulatory visual feedback approach with target presentation for second language pronunciation learning”, in Journal of Acoustical Society of America, vol. 138 (4), 2015, pp. 382-387.
 R. Akahane-Yamada, E. McDermott, T. Adachi, H. Kawahara, J. S. Pruitt, “Computer-based second language production training by using spectrographic representation and HMM-based speech recognition scores”, in Proceedings of ICSLP, 1998, Sydney, Australia.
 M. Carey, “CALL visual feedback for pronunciation of vowels: Kay Sona-Match”, in CALICO Journal, vol. 21 (3), pp. 571-601.
 I. Wilson, “Using Ultrasound For Teaching And Researching Articulation”, in Acoustical Science & Technology, vol. 35(6), 2014, pp. 285-289.
 B. Gick, B. M. Bernhardt, P. Bacsfalvi, I. Wilson, “Ultrasound imaging applications in second language acquisition”, in Phonology and Second Language Acquisition, 2008, pp. 309-322.
 P. Iverson, & B. G. Evans, “Learning English vowels with different first language vowel system II: Auditory training for native Spanish and German speakers” in The Journal of the Acoustical Society of America, vol. 126, 2009, pp. 866-877.
 S. Ylinen, M. Uther, A., Latvala, S. Vepsäläinen, P. Iverson, R. Akahane-Yamada, R. Näätänen, “Training the brain to weight speech cues differently: A study of Finnish second-language users of English, in Journal of Cognitive Neuroscience, vol. 22(6), 2010, pp. 1319-32.
 S. E. Lively, D. B. Pisoni, R. A. Yamada, Y. Tokhura, and T. Yamada, “Training Japanese listeners to identify English /r/ and /l/ III. Long-term retention of new phonetic categories”, in The Journal of the Acoustical Society of America, vol. 96, 1994, pp. 2076-2087.
 M. Posner, and S. Keele, “On the genesis of abstract ideas”, in Journal Experimental Psychology, vol. 77, 1968, 353-363.
 P. Escudero, T. Benders, K. Wanrooij, “Enhanced Vowel Distributions Facilitate The Learning Of Second Language Vowels”, in The Journal of the Acoustical Society of America, vol. 130(4), 2011, pp. El206-El212.
 J. E. Flege, I. Mackay, & D. Meador, “Native Italian Speakers’ Production And Perception Of English Vowels”, in The Journal of the Acoustical Society of America, Vol. 106, 1999, pp. 2973-2987.
 P. Escudero, B. Sisinni, M. Grimaldi, “The Effect Of Vowel Inventory And Acoustic Properties In Salento Italian Learners Of Southern British English Vowels”, in The Journal of the Acoustical Society of America, vol.135(3), 2014, pp. 1577-1584.
 B. Bassetti & N. Atkinson, “Effects Of Orthographic Forms On Pronunciation In Experienced Instructed Second Language Learners”, in Orthographic Effects In Second Language Phonology. Special Issue. Applied Psycholinguistics, vol. 36(1), 2015, pp. 67-91.
 R.I. Thomson, “Computer Assisted Pronunciation Training: Targeting second language vowel perception improves pronunciation” in CALICO Journal, vol. 28(3), 2011, pp. 744-765.
 P. Boersma, and D. Weenink, “Praat: Doing phonetics by computer” (computer program), Version 6.0, 2016. http://www.praat.org/
 K. Chládková, P. Escudero, P. Boersma, “Context-Specific Acoustic Differences Between Peruvian And Iberian Spanish Vowels”, in The Journal of the Acoustical Society of America, Vol. 130, 2011, pp. 416–428.
 B. Sisinni, I. S. d’Apolito, B. Gili Fivela, M. Grimaldi, Ultrasound articulatory training for teaching pronunciation of L2 vowels, in Proceedings of the 9th International Conference ICT for Language Learning, 17-18 November, Florence, Italy, 2016, pp. 265-270.