1. Differential Equations in Engineering Problems;Salvadori,1954
2. Beam column under axially distributed load;Rajasekhariah,1965
3. Naeherungsformeln fuer des Knicken von Staeben mit linear veraenderlicher Laengskraft;Reinitzhuber;I.A.B.S.,1953
4. Bessel Functions for Engineers;McLachlan,1934
5. A Treatise on the Theory of Bessel Functions;Watson,1945