Bibliography
- ADAMS S: Pfizer, Analysis of patenting 1995-1998. Expert Opin. Ther Patents (1998) 8(11):1405–1414.
- STEELE P: Pfizer, Inc., Analysis of Patenting 1989–1994. Expert Opin Ther Patents (1995) 5(2):99–110.
- NORMAN P: Pfizer, in Top 10 Pharmaceutical Development Pipelines. SMi Publishing, February 2002.