1. Formoterol
2. Global Strategy for Asthma Management and Prevention: Global Initiative for Asthma (GINA) Workshop Report. NIH Publ No 02-3659. Issued January, 1995 (updated 2004). Available from URL:http://www.ginasthma.com.
3. Montreal Protocol: Montreal Protocol on substances that deplete the ozone layer. 1998;adjusted/amended in Beijing 1999. Available from URL http://www.unep.org/ozone/Montreal-Protocol/Montreal-Protocol2000.shtml.