Virtanen, P.O.I. N-Methyl-2-Pyrrolidone as a Medium for Chemical Reactions X - 1a.ed. - Oulu : University of Oulu, 1973 - Acta Universitatis Ouluensis.Serie A Scientiae Rerum Naturalium Nš 14 Chemica Nš 3 . Standard No.: DEX-M504 Subjects--Topical Terms: ORGANICA