%0 Journal Article %A Victor D. Gershun %T Integrable String Models in Terms of Chiral Invariants of $\mathrm{SU}(n)$, $\mathrm{SO}(n)$, %J Symmetry, integrability and geometry: methods and applications %D 2008 %V 4 %U http://geodesic.mathdoc.fr/item/SIGMA_2008_4_a40/ %G en %F SIGMA_2008_4_a40