Melios, C. B., Molina, M., Tognolli, J. O. and Espeleta, A. C. P. (1979) “Equilibria in acetone medium. VI*. The Cobalt(II) chloride - Tri-n-octylphosphine oxide system”, Eclética Química, 4(1), pp. 39–46. doi: 10.26850/1678-4618eqj.v4.1.1979.p47-53.