1. U.S. Department of Agriculture, Western Regional Research Center, 800 Buchanan Street, Albany, California 94710
2. PAPRICAN and Chemistry Department, Pulp and Paper Research Centre, McGill University, 3420 University Street, Montreal, PQ, Canada H3A 2A7
3. PAPRICAN, 570 boul St-Jean, Pointe-Claire, PQ, Canada H9R 3J9