The Church, The Episcopate, The Conciliar Structure, Two Rival Ecclesiologies, The Papacy, Perspectives and Formulas of Schism, The Christology of Schism and Trinitarian Doctrine and the Schism, cover all the major problems. Sherrard's book is definitely not for the casual reader. It is a profound treatise which gets to the theological bottom of the doctrinal differences between the Roman Church and the Orthodox Church. Fundamentally it is an issue of christological and trinitarian theology. To pretend that it is anything less is merely to play with words.
Doctrinal differences lie at the root of the schism.
The schism can be healed only when there is prior agreement about the fundamental realities of the Christian faith.