Introduction to Non-Pertubative String Theory In this review I discuss some basic aspects of non-perturbative string theory. The topics include test of duality symmetries based on the analysis of the low energy effective action and the spectrum of BPS states, relationship between differe http://xxx.uni-augsburg.de/abs/hep-th/9802051 Uni-augsburg.de~Site InfoWhoisTrace RouteRBL Check
M-Theory The theory formerly known as strings is presented in a non-technical format. http://www.damtp.cam.ac.uk/user/gr/public/qg_ss.html Cam.ac.uk~Site InfoWhoisTrace RouteRBL Check