From the editors´ desk

In this issue we have four articles. The first is "Recent Developments in the Pressure Wave Propagation Method," by Stephane Hole from ESPCI, Paris. The pressure wave propagation (PWP) method, also known as the laser-inducedpressure- pulse (LIPP) method, was one of the earliest nondestructive methods of measuring space charge and electric field profiles in solid dielectrics, and dates from 1977.