The use of Differential Scanning Calorimetry (DSC) to characterize phase diagrams of ionic mixtures of 1-n-butyl-3-methylimidazolium chloride and niobium chloride or zinc chloride Alves, M.B.; Umpierre, A.P.; Santos Jr., V.O.; Soares, V.C.; Dupont, J.; Rubim, J.C.; Suarez, P.A.; Thermochimica Acta 2010, 502, 20-23