The Cauchy-Poisson waves in an inviscid rotating stratified liquid. Debnath, Lokenath, Guha, Uma B., Basu, Manjusri (1990) Journal of Applied Mathematics and Stochastic Analysis
Transient development of gravity waves for two layered fluids. Essawy, A.H., Faltas, M.S. (1992) International Journal of Mathematics and Mathematical Sciences