“…We note that the work of Casey paved the way for the establishment of an empirical and theoretical basis for the assumptions of Gompertzian growth of solid tumors. Following this, justification of Gompertzian growth of solid tumors, such as breast and lung cancer, from various other viewpoints are also noteworthy (Laird, 1965;Simpson-Herren and Lloyd, 1970;Kendal, 1985;Frenzen and Murray, 1986;Norton, 1988;Gyllenberg and Webb, 1989;Calderón and Kwembe, 1991;Marusic et al, 1994a,b;Bassukas, 1994;Bajzer et al, 1997;Bajzer, 1999).…”