The first of two articles in a short series by Father Peter Farrington considering the canons and history concerning the translation of bishops can be found at
http://canon15.nicaea.ca/These have been written for the St Mark Orthodox Fellowship -
http://www.smofonline.org/ - a well established Christian charitable organisation working to promote the Orthodox Faith.
Father Peter is also presently researching material for a detailed volume on the same topic which will be published by the St Mark Orthodox Fellowship early in October.