The Abrikosov Flux Lattice in Planar Crystals of YBaCuO
  Anisotropic London Theory is used to predict the Abriskosv flux lattice in planar crystals of YBaCuO. By taking into account the orientation of the flux lattice as a function of applied field it is shown that the vortex chain state is observed in Bitter pattern experiments. 
M Harrison and W Barford (University of Sheffield)