1. Approximation method for wave functions (I), (II), and (III);Yasuura;Kyushu Univ. Tech. Rep.,1965
2. Approximation method for wave functions (I), (II), and (III);Yasuura;Kyushu Univ. Tech. Rep.,1966
3. Approximation method for wave functions (I), (II), and (III);Yasuura;Kyushu Univ. Tech. Rep.,1966
4. Sur la diffraction d'une onde plane par un réseau infiniment conducteur;Petit;C. R. Acad. Sci. B,1966