White, J. S., Hinkov, V., Heslop, R. W., Lycett, R. J., Forgan, E. M., Bowell, C., … Erb, A. (2009). Fermi surface and order parameter driven vortex lattice structure transitions in twin-free YBa2Cu3O7. Physical Review Letters, 102(9), 097001 (4 pp.). https://doi.org/10.1103/PhysRevLett.102.097001