This tutorial references the following papers.
[971]Bartolomei, G. G. and Chanturiya, V. M. 1967 “Experimental Study of True Void Fraction When Boiling Subcooled Water in Vertical Tubes” in Thermal Engineering, 14(2).
[972]Bartolomei, G. G. et al 1982 “An Experimental Investigation of True Volumetric Vapor Content with Subcooled Boiling in Tubes” in Thermal Engineering, 29(3).