Gauge Invariant Lagrangians for Free and Interacting Higher Spin Fields. A Review of the BRST formulation

Gauge Invariant Matrix Model for the Â-D-Ê Closed Strings

Gauge invariant nonlocal mass operator in YM theories

Gauge Invariant Operators and Closed String Scattering in Open String Field Theory

Gauge invariant operators in field theories on non-commutative spaces

Gauge Invariant Overlaps for Classical Solutions in Open String Field Theory

Gauge Invariant Pauli-Villars Regularization of Chiral Fermions

Gauge invariant perturbation theory and non-critical string models of Yang-Mills theories

Gauge invariant reduction to the light-front

Gauge invariant reformulation and BRST quantization of the nonconfining Schwinger model

Gauge invariant regularisation in the ERG approach

Gauge invariant regularisation via SU(N|N)

Gauge Invariant Regularization in the AdS/CFT Correspondence and Ghost D-branes

Gauge Invariant Regularization of Quantum Field Theory on the Light-Front

Gauge Invariant Summation of All QCD Virtual Gluon Exchanges

Gauge invariant systems of a general form: Count of the physical degrees of freedom

Gauge Invariant Treatment of $γ_{5}$ in the Scheme of 't Hooft and Veltman

Gauge invariant two-point vertices of shadow fields, AdS/CFT, and conformal fields

Gauge invariant variables and the Yang-Mills-Chern-Simons theory

Gauge Invariant Variational Approach with Fermions: the Schwinger Model