Semileptonic decays of the bottom-charm hadrons
  We present the results of a study of the semileptonic decays of the $B_c$-meson and the lowest lying doubly heavy baryons using the relativistic quark model. We do not employ a heavy quark mass expansion but keep the masses of the heavy quarks and hadronss finite. We calculate all relevant form factors and decay rates. 
Mikhail A. Ivanov (Dubna, JINR)