Ibañez A, Aguado J, Baez S, Huepe D, Lopez V, Ortega R, Sigman M, Mikulan E, Lischinsky L, Torrente F, Cetkovich M, Torralva T, Bekinschtein T, Manes F. From neural signatures of emotional modulation to social cognition: individual differences in healthy volunteers and psychiatric participants. Soc Cogn Affect Neur. 2014 Jul;9(7):939-50.
Cohen LM, Britt DM, Collins FL, Stott HD, Carter LC. Chewing gum affects smoking topography. Exp Clin Psychopharmacol. 1999 Nov 1;7(4):444-7.