Transfer of transient signals between two fluid-filled boreholes embedded in an elastic formation - a closed-form solution / B.P. de Hon, A.T. de Hoop and A.L. KurkjianTransient cross-borehole elastodynamic signal transfer through a horizontally stratified anisotropic formation / Bastiaan Pieter de HonAcoustic transient signal transfer between two fluid-filled boreholes embedded in a horizontally stratified anisotropic elastic formation / B.P. de Hon