2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/24578We consider the Landau theory of phase transitions for multiple superconducting phases in T_h crystals. All possible phase transition sequences involving a single superconducting order parameter are found. These results may be applicable to PrOs4Sb12.2 pages, proceedings of SCES '04Superconductivitytext