J. S. White, V. Hinkov, R. W. Heslop, R. J. Lycett, E. M. Forgan, C. Bowell, S. Straessle, A. B. Abrahamsen, M. Laver, C. D. Dewhurst, J. Kohlbrecher, J. L. Gavilano, J. Mesot, B. Keimer, A. Erb: Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7. 2009Physical Review Letters: 102. ISBN 0031-9007 http://dx.doi.org/10.1103/PhysRevLett.102.097001