Haller, Stefan Max Planck Institute for Mathematics, Max Planck Society;
Burghelea, Dan Max Planck Institute for Mathematics, Max Planck Society;
Haller, S., & Burghelea, D. (2007). Complex-valued Ray-Singer torsion. Journal of Functional Analysis, 248(1), 27-78. doi:10.1016/j.jfa.2007.03.027.