  The spectra of leading and nonleading charmed baryons ($\Lambda_c$ and
$\bar{\Lambda}_c$) as well as the asymmetries between these spectra measured in
$\Sigma^-A$, $\pi^-A$ and pA collisions at $p_L= 600 GeV/c$ in the E781
experiment are simultaneously described within the framework of Quark-Gluon
String Model (QGSM). It is shown that the charmed baryon spectra can be fitted
by QGSM curves calculated with the parameter of diquark fragmentation,
$a_f^{\Lambda_c}$=0.006. It was obtained in this experiment that the asymmetry
between the spectra of $\Lambda_c$ and $\bar{\Lambda}_c$ in $\pi^-A$ collisions
is of nonzero value. It might be described in our model only assuming that the
string junction is transfered from target proton into the kinematical region of
pion projectile fragmentation.
