A Parallel O(log N) Algorithm for Finding Connected Components In Planar Images. - Ajit Agrawal; Lena Nekludova; Willie Lim (ICPP, 1987)

The 1994 AAAI Robot-Building Laboratory. - Willie Lim; Henry Hexmoor; Gerhard K. Kraetzschmar; Jeffrey Graham; Josef Schneeberger (AI Mag., 1995)