A manuscript giving a review and further details of the two-eagle two-regent hypothesis is available from this website.
(The manuscript also contains a review of some unrecognized coins of Cleopatra VII that show two eagles.
These coins led to this inquiry into the two-eagle two-regent hypothesis.)
See below to download, read or print the manuscript entitled :
Cypriot Bronze Coins of Cleopatra with Caesarion;
Two Eagles on Ptolemaic Coins as Representations of Co-Regency
For a one page abstract of the manuscript
click (in English and French)