Duality in Quantum Field Theory (and String Theory) por Luis Alvarez-Gaume, Frederic Zamora publicado pela "Cornell University Library" DOI: 10.1063/1.55087 No CERN-TH/97-257, UB-ECM-PF 97/26 arXiv:hep-th/9709180 (1997)
An Introduction to T-Duality in String Theory por E. Alvarez, L. Alvarez-Gaume, Y. Lozano publicado no jornal "Nucl. Phys. Proc. Suppl. 41:1-20,1995" DOI: 10.1016/0920-5632(95)00429-D, No: CERN-TH-7486/94, FTUAM-94/26 - arXiv:hep-th/9410237 (1994)