C. Bernhard, J. L. Tallon, Ch. Niedermayer, Th. Blasius, A. Golnik, E. Brücher, R. K. Kremer, D. R. Noakes, C. E. Stronach, E. J. Ansaldo,
Coexistence of ferromagnetism and superconductivity in the hybrid ruthenate-cuprate compound RuSr 2 GdCu 2 O 8 studied by muon spin rotation and dc magnetization Physical Review B. ,vol. 59, pp. 14099- 14107 ,(1999) ,
10.1103/PHYSREVB.59.14099