Investigation of the electrochemical reduction of 3r-claussequinone in drug dmf and niuxed water-dmf solvent: a system involving self protonation - Goulart, M O F; Soares, N A; Sant'ana, A E G; Tonholo, Josealdo; Boodts, Julien Françoise Coleta (Journal of the Brazilian Chemical Society, 1993)