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  Khaykovich, B.; Birgeneau, R.J.; Chou, F.C.; Erwin, R.W.; Kastner, M.A.; Lee, S.-H.; Lee, Y.S.; Smeibidl, P.; Vorderwisch, P.; Wakimoto, S.: Effect of a magnetic field on long-range magnetic order in stage-4 and stage-6 superconducting La₂CuO_4+y. Physical Review B 67 (2003), p. 054501/1-6

10.1103/PhysRevB.67.054501