Relative Permittivities, Refractive Indices, and Densities of Dihydrofuran-2(3H)-one + Butan-1-ol and + Butan-2-ol at T = (293.15, 298.15, 303.15, and 313.15) K Farhan, A.M.; Awwad, A.M.; Journal of Chemical & Engineering Data 2010, 55, 1035-1038