New Luminescent Tetranuclear Lanthanide‐Based Silsesquioxane Cage‐Like Architectures. - Kulakova, Alena N.; Bilyachenko, Alexey N.; Levitsky, Mikhail M.; Khrustalev, Victor N.; Shubina, Elena S.; Felix, Gautier; Mamontova, Ekaterina; Long, Jérôme; Guari, Yannick; Larionova, Joulia (Chemistry - A European Journal, 2020)