. Papers presented at XXVI General Assembly of URSI (Toronto, Canada, 13-21 Aug 1999) . N.A. Zabotin and J.W. Wright Structure Functions of Temporal Phase Variations in Vertical Sounding as a Diagnostic Tool for Ionospheric Small-Scale Irregularities . [Poster Paper Full Text] . N.A. Zabotin, J.W. Wright and G.A. Zhbankov Higher Statistical Moments of Vertical Sounding Signal Intensity Variations . [Poster Paper Full Text]