Phase separation of carboxylic acids on graphite surface at submonolayer regime M. D. Alba, A. K. Bickerstaffe, M. A. Castro, S. M. Clarke, S. Medina, C. Millán, M. M. Orta, E. Pavón and A. C. Perdigón Eur. Phys. J. Special Topics, 167 (2009) 151-156 Published online: 05 February 2009 DOI: 10.1140/epjst/e2009-00951-6