On 2D gravity coupled to $c\leq 1$ matter in Polyakov light-cone gauge
  A new formulation of $c\leq 1$ matter coupled to 2D gravity is proposed. This model, being closely analogous to one in the Polyakov light-cone gauge, possesses well defined global properties which allow to calculate correlation functions. As an example, the three point correlation functions of discrete states are found. 
Oleg Andreev