Halperin-Lubensky-Ma effect in type-I superconducting films
  In this note we employ concurrently techniques of generalized $zeta$-functions and compactification methods introduced in previous publications, to study the Halperin-Lubensky-Ma theory of induced weak first-order phase transitions applied to type-I superconducting films. We obtain closed formulas to the critical temperature and to the size temperature as functions of the film thickness. 
L. M. Abreu, C. de Calan and A. P. C. Malbouisson