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1. Somogyi, L. and Sohár, P. Tricarbonylmethane acylhydrazones: Reactions under acylating conditions and formation of fused isoxazole derivatives with concomitant NN bond cleavage.
Liebigs Annalen, 1995, 1903–1906.
2. Magdalena Malecka, Slawomir J. Grabowski, Elzbieta Budzisz. Crystal and molecular structures of 3-[1-(2-hydroxyethylamino)-ethylidene]-chroman-2,4-dione and 2-methoxy-3-[1-(benzylamino)-ethylidene]-2,3-dihydro-2,4-dioxo-2[lambda]5-benzo[e][1,2]oxaphosphinane and DFT study of intramolecular H-bonds of related compounds// Chemical Physics, Volume 297, Issues 1-3, 2004, Pages 235-244
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http://dx.doi.org/10.1016/j.chemphys.2003.10.029
3. Elzbieta Budzisz, Elzbieta Brzezinska, Urszula Krajewska, Marek Rozalski. Cytotoxic effects, alkylating properties and molecular modelling of coumarin derivatives and their phosphonic analogues// European Journal of Medicinal Chemistry, Volume 38, Issue 6, 2003, Pages 597-603
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http://dx.doi.org/10.1016/S0223-5234(03)00086-2