Calcium hydroxyapatites as efficient catalysts for the Michael C-C bond formationGruselle, Michel; Kanger, Tõnis; Thouvenot, Rene; Flambard, Alexandrine; Kriis, Kadri; Mikli, Valdek; Traksmaa, Rainer; Maaten, Birgit; Tõnsuaadu, KaiaACS catalysis2011 / p. 1729-1733 : ill