English Beginner The Little Book of String Theory (Science Essentials) Steven S. Gubser 2010 View book
English Beginner An Introduction to String Theory and D-brane Dynamics: With Problems and Solutions Szabo Richard 2011 View book
English Beginner String Theory and Particle Physics: An Introduction to String Phenomenology Luis E. Ibáñez,Angel M. Uranga 2012 View book
English Beginner The shape of inner space: String theory and the geometry Yau S.-T.,Nadis S. 2010 View book