Institution: | Institute of Nuclear Physics and Techniques of the Academy of Mining and Metallurgy, 30-059 Cracow, Mickiewicza 30, Poland;Institute of Physics, Technical University of Cracow, 30-084 Cracow, Podchora?z?ych 1, Poland;Institute of Physics, Jagiellonian University, 30-059 Cracow, Reymonta 4, Poland;CNRS, B.P. No 166, Centre de Tri 38842, Grenoble Cedex, France |