Decay properties of neutron-deficient isotopes 256,257Db, 255Rf, 252,253Lr F.P. Heßberger, S. Hofmann, D. Ackermann, V. Ninov, M. Leino, G. Münzenberg, S. Saro, A. Lavrentev, A.G. Popeko, A.V. Yeremin and Ch. StodelEur. Phys. J. A, 12 1 (2001) 57-67DOI: https://doi.org/10.1007/s100500170039