General properties of phase diagrams of heavy-fermion metals V. R. Shaginyan, A. Z. Msezane, K. G. Popov, G. S. Japaridze and V. A. Khodel EPL, 106 3 (2014) 37001 Published online: 05 May 2014 DOI: 10.1209/0295-5075/106/37001