Liquid density of biofuel mixtures: 1-Heptanol + heptane system at pressures up to 140 MPa and temperatures from 298.15 K to 393.15 K Alaoui, F.E.; Montero, E.A.; Qiu, G.; Aguilar, F.; Wu, J.; The Journal of Chemical Thermodynamics 2013, 65, 174-183