We study Bethe vectors of integrable models based on the super-Yangian
Y(gl(m∣n)). Starting from the super-trace formula, we exhibitrecursion relations for these vectors in the case of
Y(gl(2∣1))and
Y(gl(1∣2)). These recursion relations allow to get explicitexpressions for the Bethe vectors. Using an antimorphism of the super-Yangian
Y(gl(m∣n)), we also construct a super-trace formula for dual Bethevectors, and, for
Y(gl(2∣1)) and
Y(gl(1∣2))super-Yangians, show recursion relations for them. Again, the latter allow usto get explicit expressions for dual Bethe vectors.