1. I.R. Klebanov, String theory in two-dimensions, in the proceedings of the Spring School on String Theory and Quantum Gravity, April 15–23, Trieste, Italy (1991), hep-th/9108019 [INSPIRE].
2. P.H. Ginsparg and G.W. Moore, Lectures on 2 − D gravity and 2D string theory, in the proceedings of the Theoretical Advanced Study Institute (TASI 92): From Black Holes and Strings to Particles, June 1–26, Boulder, U.S.A. (1992), hep-th/9304011 [INSPIRE].
3. A. Jevicki, Development in 2 − D string theory, talk given at the Workshop on String Theory, Gauge Theory and Quantum Gravity, April 28–29, Trieste, Italy (1993), hep-th/9309115 [INSPIRE].
4. J. Polchinski, What is string theory?, in the proceedings of the NATO Advanced Study Institute: Les Houches Summer School, Session 62: Fluctuating Geometries in Statistical Mechanics and Field Theory, August 2–September 9, Les Houches, France (1994), hep-th/9411028 [INSPIRE].
5. E.J. Martinec, Matrix models and 2D string theory, in the proceedings of the 9th
Frontiers of Mathematical Physics Summer School on Strings, Gravity and Cosmology, August 2–13, Vancouver, Canada (2004), hep-th/0410136 [INSPIRE].