RT Journal Article SR Electronic T1 Validation: Why, What, When, How Much JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 55 OP 60 VO 50 IS 1 A1 GOLD, Daniel H. YR 1996 UL http://journal.pda.org/content/50/1/55.abstract AB