Citation: Stefa\'nczyk, Olaf; Majcher, Anna M.; Rams, Micha\/l; Nitek, Wojciech; Kozie\/l, Marcin; \/Lasocha, Wies\/law; Sieklucka, Barbara (2013). Incorporation of guanidinium ions in Cu(II)-[M(V)(CN)8]3- double-layered magnetic systems.. Dalton transactions (Cambridge, England : 2003), 42, pp. 5042-5046.