Treemacs: An extensible tree editor - David H. Hammerslag (1990)

Trace View: A Trace Visualization Tool. - Allen D. Malony; David H. Hammerslag; David Jablonowski (ACPC, 1991)

Traceview: A Trace Visualization Tool. - Allen D. Malony; David H. Hammerslag; David Jablonowski (IEEE Softw., 1991)