opened for signature - July 8 1985
entered into force - September 2 1987
parties - (22) Austria, Belarus, Belgium, Bulgaria, Canada, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Italy, Liechtenstein, Luxembourg, Netherlands, Norway, Russia, Slovakia, Sweden, Switzerland, Ukraine
opened for signature - June 14 1994
entered into force - August 5 1998
parties - (23) Austria, Belgium, Canada, Croatia, Czech Republic, Denmark, European Union, Finland, France, Germany, Greece, Ireland, Italy, Liechtenstein, Luxembourg, Netherlands, Norway, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom
countries that have signed, but not yet ratified - (5) Bulgaria, Hungary, Poland, Russia, Ukraine