Suharyana Suharyana Junisan Fisika Fakultas Matematika dan llmu Pengetahuan Alam
Universitas Sebelas Maret Jl. Ir. Sutami 36A, Surakarta 57126 Indonesia
J. M. Cadogan School of Physics, The University of New South Wales, Sydney 2052 Australia
D. H. Ryan School of Physics, The University of New South Wales, Sydney 2052 Australia