A stabilized column generation scheme for the traveling salesman subtour problem. - Andreas Westerlund; Maud Göthe-Lundgren; Torbjörn Larsson (Discret. Appl. Math., 2006)

A note on relatives to the Held and Karp 1-tree problem. - Andreas Westerlund; Maud Göthe-Lundgren; Torbjörn Larsson (Oper. Res. Lett., 2006)