 Through the principle of church economy, the Catholic Church recognizes as valid the ordination of priests in denominations with unbroken apostolic succession, such as in the Eastern Orthodox Church, Polish National Catholic Church, Oriental Orthodox Church, the Assyrian Church of the East, Church of Sweden, and Evangelical Lutheran Church of Finland, but not other Lutheran churches.Recognition of the ordination of Anglican Church priests was denied in 1896 by Pope Leo XIII through the papal bull "Apostolicae curae", over a dispute in the wording of the Anglican ceremony starting in the 1500s.In 1965, the Second Vatican Council released "Presbyterorum Ordinis" on the ministry and life of priests, and "Optatam Totius" on the training of priests.