Advances in single crystal growth and annealing treatment of electron-doped HTSC M. Lambacher, T. Helm, M. Kartsovnik and A. Erb Eur. Phys. J. Special Topics, 188 (2010) 61-72 Published online: 11 October 2010 DOI: 10.1140/epjst/e2010-01297-8