Alkali‐free processing of advanced open‐celled sinter‐crystallized glass‐ceramics. - Elsayed, Hamada; Rabelo Monich, Patricia; Savio, Gianpaolo; Hartmann, Malte; Boccaccini, Aldo R.; Galusek, Dusan; Kraxner, Jozef; Bernardo, Enrico (International Journal of Applied Glass Science, 2021)