Problem 10811. - Phil Tracy (Am. Math. Mon., 2000)

Highly Cohesive Graphs Have Long Nonseparating Paths: 10647. - Stephen C. Locke; Phil Tracy; H.-J. Voss (Am. Math. Mon., 2001)

The Distance between the Endpoints of a Longest Path: 10811. - Phil Tracy; et al. (Am. Math. Mon., 2002)