Novel Treatments of Strong Correlations, Volume 90 in the Advances in Quantum Chemistry series, highlights new advances in the field, with this new volume presenting interesting chapters written by an international board of authors. Topics covered include Coupled Cluster, Stochastic CC, NOFT, Breaking the Symmetry Dilemma : Capturing Strong-Correlations by Restoration of Broken Symmetry Solutions, Flexible wavefunctions, Electronic Coupling to Optical Cavity Modes, Multireference Perturbation Theories Based on the Dyall Hamiltonian, The GW Approximation: A Quantum Chemistry Perspective, Geminals, and more.