Browsing I just came across the following references to unitheism:
http://users.skynet.be/horizons/unitheisme/indexeng.htmlUNITHEISM
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UNITHEISM : the true universal religion was born.
God addresses to all human beings a new message of joy, freedom, tolerance and
fraternity. God wants human beings to put an end to religious fights and wars.
He wants human beings - Christians, Muslims, Jews, Buddhists, Taoists,
Pantheists and all followers of any sects - to join the universal peace.
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Aanother reference from a Muslim writer:
CHAPTER ONE
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What are the origins of religion and why does the theological science that deals with them is called the science of (Kalam)? [1]
* The origins of religion are; unitheism; belief in the prophet hood of Muhammad, belief in the Resurrection; belief in the twelve Apostolic Imama; and belief in the justice of Allah.
They are considered the fundamentals of the holy building of Islam, assuming that the structure of religion as a whole is relying on them; i-e without them any lawful regulation can not be authenticated.