Kojima, E., and M. Shinada. “DEVELOPMENT OF ACCURATE AND PRACTICAL SIMULATION TECHNIQUE BASED ON THE MODAL APPROXIMATIONS FOR FLUID TRANSIENTS IN COMPOUND FLUID-LINE SYSTEMS: (2ND REPORT: ENHANCEMENT OF ANALYTICAL FUNCTIONS FOR GENERALIZATION) (1ST REPORT: VOL.3 NO.2)”. International Journal of Fluid Power, vol. 4, no. 3, Nov. 2003, pp. 35-45, https://journals.riverpublishers.com/index.php/IJFP/article/view/601.