Home › Authors › R. Dijkgraaf 👤 R. Dijkgraaf 3 books Books by R. Dijkgraaf Blikwisselingen Blikwisselingen 2008 Geometric Approach to Two-Dime Geometric Approach to Two-Dimensional Conformal Field Theory 1996 String Theory, Gauge Theory an String Theory, Gauge Theory and Quantum Gravity '93 - Proceedings of the Trieste Spring School and Workshop 1994