Declaration made upon ratification:
"The Republic of Bulgaria declares that in accordance with article 4, paragraph 6, and with respect to paragraph 2(b) of the said article, it accepts as a basis of the anthropogenic emissions in Bulgaria of carbon dioxide and other greenhouse gases not controlled by the Montreal Protocol, the 1988 levels of the said emissions in the country and not their 1990 levels, keeping records of and comparing the emission rates during the subsequent years."