Wendlandt, R.F. “The System K2O-MgO-Al2O3-SiO2-H2O-CO2: Phase Relations of the Joins Ph-H2O-CO2 and Ph-En-Mag at High Temperatures and High Pressures and Applications to the Genesis of Alkalic Magmas”. International Kimberlite Conference: Extended Abstracts, vol. 2, no. 1, Sept. 1977, pp. 355-7, doi:10.29173/ikc1047.