Simple Linear Time Recognition of Unit Interval Graphs. - Derek G. Corneil; Hiryoung Kim; Sridhar Natarajan; Stephan Olariu; Alan P. Sprague (Inf. Process. Lett., 1995)

Optimal Parallel Matching on Bipartite Permutation Graphs. - Hiryoung Kim; Alan P. Sprague (Parallel Algorithms Appl., 1997)