Densities, viscosities, sound speed, and IR studies of N-methyl-2-pyrrolidone with cyclohexylamine, cyclohexanol, and cyclohexene at different temperatures Reddy, K.R.; Kumar, D.B.K.; Rao, G.S.; Anila, P.; Rambabu, C.; Thermochimica Acta 2014, 590, 116-126