Hsieh, Li-WenLi-WenHsiehLin, Ying-TsongYing-TsongLinChen, Chi-FangChi-FangChen2009-02-192018-06-282009-02-192018-06-282004http://ntur.lib.ntu.edu.tw//handle/246246/134733en-USAzimuthal Limitation In The Parabolic-Equation Approximation For Three-Dimensional Underwater Acoustic Propagationconference paper