1. Coffee Pulp Vermicomposting Treatment
2. Complexation analysis of fresh waters by equilibrium diafiltration
3. Buswell, J.A., Cai, Y.J. & Chang, S. 1996 Lignolytic enzyme production and secretion in edible mushroom fungi. In Mushroom Biology and Mushroom Products, ed. Royse, D.J. pp. 113?122. University Park: Pennsylvania State University. ISBN 1-883956-01-3.
4. Consejo Mexicano del Café, 2000 http://www.sagar.gob.mx/cmc/cafe015p.htm.