found: Work cat.: 2006043711: Sondon, J.B. Surface area and porosity determinations by physisorption : measurements and theory, 2006.
found: Facts on file dict. chem.(physisoprtion)
found: McGraw-Hill encycl. chem.(physical adsorption)
found: Oxford dict. science(physisorption; adsorbed molecules are held by the weaker van der Waals forces)
found: Semiconductor glossary WWW site, May 24, 2006(physisorption; the weakest form of adsorption resulting from purely physical attraction (van der Waals force) between the adsorbate and the surface; no chemical bond between the adsorbate and the surface is formed)
found: Wikipedia, May 24, 2006(physisorption or physical adsorption in which the adsorbate adheres to the surface only through weak intermolecular interactions)
notfound: Hawley's chem. dict.
