Webster, A. G. (1919). “Acoustical Impedance and the Theory of Horns and of the Phonograph”. Proceedings of the National Academy of Sciences5 (7): 275–282. doi:10.1073/pnas.5.7.275. ISSN0027-8424.
Eisner, Edward (1967). “Complete Solutions of the “Webster” Horn Equation”. The Journal of the Acoustical Society of America41 (4B): 1126–1146. doi:10.1121/1.1910444. ISSN0001-4966.
Martin, P. A. (2004). “On Webster’s horn equation and some generalizations”. The Journal of the Acoustical Society of America116 (3): 1381–1388. doi:10.1121/1.1775272. ISSN0001-4966.
Webster, A. G. (1919). “Acoustical Impedance and the Theory of Horns and of the Phonograph”. Proceedings of the National Academy of Sciences5 (7): 275–282. doi:10.1073/pnas.5.7.275. ISSN0027-8424.
Eisner, Edward (1967). “Complete Solutions of the “Webster” Horn Equation”. The Journal of the Acoustical Society of America41 (4B): 1126–1146. doi:10.1121/1.1910444. ISSN0001-4966.
Martin, P. A. (2004). “On Webster’s horn equation and some generalizations”. The Journal of the Acoustical Society of America116 (3): 1381–1388. doi:10.1121/1.1775272. ISSN0001-4966.