Classical solution of the Cauchy problem for biwave equation:   Application of Fourier transform
  In this paper, we use some Fourier analysis techniques to find an exact solution to the Cauchy problem for the $n$-dimensional biwave equation in the upper half-space $\mathbb{R}^n\times [0,+\infty)$. 
Victor Korzyuk, Nguyen Van Vinh, Nguyen Tuan Minh
math.AP