Stability of dense hydrophobic-polar copolymer globules: Regular, random and designed sequences E. N. Govorun, A. R. Khokhlov and A. N. Semenov Eur. Phys. J. E, 12 2 (2003) 255-264 Published online: 11 November 2003 DOI: 10.1140/epje/i2003-10057-y