An Assessment of Aircraft as a Source of Particles to the Upper Troposphere (1999)
Anderson, B.E., Cofer, W.R., Crawford, J., Gregory, G.L., Vay, S.A., ...
Fire research in the boreal zone of Eurasia and North America. (1998)
Stocks, B. J., Goldammer, J. G., Cahoon, D. R., Cofer, W. R.