j.Нet.Сhеm 1980, Volume 17, pp. 359-368
Studies on Chemotherapeutics I. Synthesis of 5-Substituted-4-oxo-1,4-dihydro-3-pyridinecarboxylic Acid Derivatives
Maria Balogh, Istvan Hermecz, Zoltan Meszaros, Kalman Simon, Levente Pusztay, Gabor Horvath, Peter Dvortsak
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https://www.jhetchem.com/cd2html.php?file=19800359