Adsorption mechanism of physiologically active l-phenylalanine phosphonodipeptide analogues: Comparison of colloidal silver and macroscopic silver substrates http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVX-4PGPVNS-B&_user=2324792&_coverDate=11%2F01%2F2007&_alid=834377951&_rdoc=20&_fmt=high&_orig=mlkt&_cdi=5546&_sort=v&_st=17&_docanchor=&view=c&_ct=1414&_acct=C000056916&_version=1&_urlVersion=0&_userid=2324792&md5=0cf75e93d6cd552396ee93c18de8a9f8