Institution: | a Faculty of Mathematics and Physics, Charles University Prague, Ke Karlovu 3, CZ-12116, Prague, Czech Republic;b Joint Laboratory of Solid State Chemistry of Academy of Sciences of the Czech Republic, University Pardubice, Pardubice, Czech Republic;c Laboratory of Crystallography, University of Amsterdam, Nieuwe Achtergracht 166, NL-1018 WV, Amsterdam, The Netherlands |