Dijkgraaf, R; Moore, G; Plesser, R, *The partition function of two-dimensional string theory*,
Nuclear Physics B, vol. 394 no. 2
(1993),
pp. 356-382 [doi] .
**Abstract:**

*We derive a compact and explicit expression for the generating functional of all correlation functions of tachyon operators in two-dimensional string theory. This expression makes manifest relations of the c = 1 system to KP flow nd W1 + ∞ constraints. Moreover we derive a Kontsevich-Penner integral representation of this generating functional. © 1993.*