1. Piping and pipe support systems;Smith,1987
2. ASME Boiler and pressure vessel code (Section III, Subsection NB),1989
3. On radial and rotational spring constants of piping-nozzles;Murad,1984
4. On radial and rotational spring constants of piping-nozzles;Murad,1984
5. On radial spring constants at the juncture of a radial nozzle and a spherical shell;Batra,1984