הוא על פי הנוסחה: L = L 0 ⋅ 10 − 0.4 M b o l {\displaystyle L=L_{0}\cdot 10^{-0.4M_{bol}}} , כאשר L 0 = 3.0128 × 10 28 {\displaystyle L_{0}=3.0128\times
Bulletin of the American Schools of Oriental Research 175 (1964) 50-51. Gibson, John C. L. Textbook of Syrian Semitic Inscriptions. Volume 1: Hebrew and Moabite
J. A. Graham, B. K. Gibson, M. Han, P. Harding, R. J. Hill, J. G. Hoessel, S. M. G. Hughes, D. D. Kelson, G. D. Illingworth, R. L. Phelps, C. F. Prosser
Elements of human anatomy: general, descriptive, and practical By Tobias Gibson Richardson. McGlamry's comprehensive textbook of foot and ankle surgery