A Linear Time Algorithm for the $3$-Neighbour Traveling Salesman Problem on Halin graphs and extensions. - Brad D. Woods; Abraham P. Punnen; Tamon Stephen (CoRR, 2015)

A characterization of Linearizable instances of the Quadratic Traveling Salesman Problem. - Abraham P. Punnen; Brad D. Woods; Santosh N. Kabadi (CoRR, 2017)

A linear time algorithm for the -neighbour Travelling Salesman Problem on a Halin graph and extensions. - Brad D. Woods; Abraham P. Punnen; Tamon Stephen (Discret. Optim., 2017)

A class of exponential neighbourhoods for the quadratic travelling salesman problem. - Brad D. Woods; Abraham P. Punnen (J. Comb. Optim., 2020)