We briefly review results on two-dimensional supersymmetric quantum field
theories that exhibit factorizable particle scattering. Our particular focus is
on a series of N=1 supersymmetric theories, for which exact S-matrices
have been obtained. A Thermodynamic Bethe Ansatz (TBA) analysis for these
theories has confirmed the validity of the proposed S-matrices and has
pointed at an interesting `folding' relation with a series of N=2
supersymmetric theories.Comment: 3 pages, wstwocl.sty, epsfig.sty, talk delivered at the HEP95
Conference of the EPS, Brussels, July/August 199