Approximating quadratic programming with bound and quadratic constraints

An improved lower bound and approximation algorithm for binary constrained quadratic programming problem

Fix and bound: an efficient approach for solving large-scale quadratic programming problems with box constraints

Quadratic Outer Approximation for Convex Integer Programming with Box Constraints

On the complexity of quadratic programming with two quadratic constraints

Approximation bounds for quadratic maximization and max-cut problems with semidefinite programming relaxation

Constraint Programming for Strictly Convex Integer Quadratically-Constrained Problems