1. (1) D.Botteldooren., “Finite-difference time-domain simulation of low-frequency room acoustic problems”, Journal of Acoustic Society of America, Vol. 98, No. 6 (1995), pp. 3302-3308.
2. (2) Yabe, T., Feng, X., Utsumi, T., “The constrained interpolation profile method for multiphase analysis”, Journal of Computational Physics, Vol. 169, (2001), pp. 556-593.