2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/148190Recent results for tree amplitudes for the $N=2$ noncritical strings are presented and compared with the critical case. Arguments are given which indicate a certain discontinuity in passing from the $\hat c < 1$ model (in a Coulomb gas representation) to the $\hat c = 1$ critical case.(misprints in formulae (7),(10) and (34) have been corrected) 9 pages (Talk given at ICTP-Trieste, July '92)-Plain tex fileHigh Energy Physics - Theorytext