Complex Fourier series expansion for the liquid-solid phase transition in PCM layers: transient and steady state periodic regimesRubén Dario Santiago Acosta, Ernesto Manuel Hernández-Cooper, José Antonio Otero and Rolando Pérez-ÁlvarezE3S Web Conf., 294 (2021) 05001DOI: https://doi.org/10.1051/e3sconf/202129405001