Dense Instances of Hard Optimization Problems. - Katja Wolf (Lectures on Proof Verification and Approximation Algorithms, 1997)

Finding Dense Subgraphs with Semidefinite Programming. - Anand Srivastav; Katja Wolf (APPROX, 1998)

Solving Generalized Maximum Dispersion with Linear Programming. - Gerold Jäger; Anand Srivastav; Katja Wolf (AAIM, 2007)