X-ray laser development at Advanced Photon Research Center Y. Kato, A. Nagashima, K. Nagashima, M. Kado, T. Kawachi, M. Tanaka, N. Hasegawa, G. Sukegawa, S. Nanba, P. Lu et A. Sasaki J. Phys. IV France, 11 PR2 (2001) Pr2-3-Pr2-10 DOI: 10.1051/jp4:2001201