• [1]

    A. C. Fonseca and P. E. Shdey, Ann. Phys., 117 (1979), 268.[2] J. Revai and J. Zofka, Phys. Letters, lOlB ( 1981 ), 228.[3] Y. Yamaguchi, Phys. Rev., 95 (1954), 1728.[4] V. G. Neudatchin et al., Phys. Letters, 34B ( 1971), 581.