ULTRASONIC LIGHT DIFFRACTION FOR THE CASE OF THE INTENSE LASER BEAM GENERATING A 3rd HARMONIC IN LIQUIDS J. JOZEFOWSKA, M. KOSMOL et A. SLIWINSKI J. Phys. Colloques, 33 C6 (1972) C6-239-C6-244 DOI: 10.1051/jphyscol:1972652