“…For commercial aluminoborosilicate glasses, we can assume that all aluminum and boron are fourfold coordinated and stabilized by modifier ions. Then, NBO/T is given as: Barton (Barton and Morain, 1970), Tsugawa (Tsugawa et al, 1976), Leiby (Leiby and Chen, 1960), Altemose (Altemose, 1961(Altemose, , 1962Shelby, 1996), Norton (Norton, 1953), Barrer (Barrer, 1934), Johnson (Johnson and Burt, 1922), Lee et al (Lee et al, 1962), Lee (Lee, 1963), Massaryk (Masaryk, 1968), Ried (Ried et al, 2014), Shelby (Shelby, 1974b(Shelby, , 1977a(Shelby, , 1996, Laska , and Walters (Walters, 1970 (Shelby, 1973(Shelby, , 1974a(Shelby, , 1996Shelby and Eagan, 1976;Ried et al, 2014).…”