1. Weathering of road tar. I
2. Weathering of road tar. II
3. Oxygen distribution on asphalts used for bituminous paving
4. Sharkey , A. G. , jun. Shultz , J. L. Kessler , T. Friedel , R. A. th Ann. Conf. Mass Spectrometry Allied Topics 443 446
5. Shultz , J. L. Kessler , T. Friedel , R. A. Sharkey , A. G. , jun. th Ann. Conf. Mass Spectrometry Allied Topics 359 361