$O(d,d)$ Symmetry in Quantum Cosmology

$O(d,d)$-Covariant String Cosmology

$O(N)$ Vector Field Theories in the Double Scaling Limit

$O(\tilde d,\tilde d)$ Transformations and 3D Black Hole

$O(α)$ Radiative Correction to the Casimir Energy for Penetrable Mirrors

$PSL(n|n)$ Sigma Model as a Conformal Field Theory

$Q \bar{Q}$ Potential from Strings in Curved Spacetime - Classical Results

$q$--Hypergeometric Functions in the Formalism of Free Fields

$q$-Deformed Chern Characters for Quantum Groups $SU_{q}(N)$

$q$-Deformed Classical Lie Algebras and their Anyonic Realization

$Q$-Meromorphic Functions, Quantums sets and Homomorphisms of the Quantum Plane

$q$-Virasoro Algebra and the Point-Splitting

$q$-Virasoro Operators from $q$-Noether Currents

$q\bar q$ interaction in light-cone gauge formulations of Yang-Mills theory in 1+1 dimensions

$Q\bar Q$ potential from AdS-CFT relation at $T\geq 0$: Dependence on orientation in internal space and higher curvature corrections

$q{\bar q}$ Potential at Finite T and Weak Coupling in ${\cal N}=4$

$Q{\bar Q}$ potential in the Schwinger model on curved space - time

$R$ Matrix for $U_{q}E_{7}$

$R$--Matrix Construction of Electromagnetic Models for the Painlevé Transcendents

$R$-matrices for Elliptic Calogero-Moser Models