Conventions and protocols on avoidance of double taxation and the prevention of fiscal evasion with respect to taxes on income and capital; Treaty doc. 103-29, Sweden; Treaty doc. 103-30, Ukraine; Treaty doc. 103-31, Mexico; Treaty doc. 103-32, France; Treaty doc. 103-33, Kazakhstan; Treaty doc. 103-34, Portugal; Treaty doc. 104-4, Canada : hearing before the Committee on Foreign Relations, United States Senate, One Hundred Fourth Congress, first session, June 13, 1995.