On the phase behaviour of polyethoxylated sorbitan (Tween) surfactants in the presence of potassium inorganic salts M.S. Álvarez, F. Moscoso, F.J. Deive, M.A. Sanromán, A. Rodríguez (2012) Journal of Chemical Thermodynamics, 55: 151-158 DOI: 10.1016/j.jct.2012.07.001