If somebody in your team is indispensable, your first priority should be to get rid of them as quickly as possible.
Lisa und Ryan Bazler: https://www.amazon.com/Psychology-Debunked-Revealing-Overcoming-Life/dp/0884198863[Psychology Debunked]
Hamlet's mill
by Girogio de Santillana and Hertha von Dechend
In Hamlet's Mill, the authors make a compelling argument that the legend of the murder of Osiris by his brother Set is directly related to the failure of Orion to rise on the expected day due to the ages-long delaying action of precession.
The authors of Hamlet's Mill trace out the echoes of this same legend throughout many cultures over many centuries. Part of the reason for their title is that the Hamlet legend clearly parallels the legend of Osiris: a wicked uncle has killed his brother (Osiris in the Egyptian myth and Hamlet's father in the story of Hamlet), and he must be avenged by the son (Hamlet, and in the Egyptian legend the god Horus son of Osiris).
The Astronomy of the Bible
by E. Walter Maunder
http://www.gutenberg.org/ebooks/28536
Death of Gods in Ancient Egypt
In Death of Gods in Ancient Egypt, author Jane B. Sellers elaborates on their (de Santillana/von Dechend: Hamlet's Mill) argument with great clarity and additional insight.
Täufer
Fritz Blanke: Brüder in Christo
Die Zürcher Täufer 1525–1700
hg. von Urs B. Leu, Christian Scheidegger http://www.tvz-verlag.ch/index.php?id=72&tx_commerce_pi1[showUid]=160213&tx_commerce_pi1[catUid]=
The Stars and the Stones: Ancient Art and Astronomy in Ireland
Archaeoastronomer and artist Martin Brennan provides compelling evidence that the double spiral is related to the changes in the sun's path throughout the year.
Hans Schindler Bellamy
Bellamy's first book, Moons, Myths and Man, describes Hoerbiger's theory in detail, and its application to world myths, and his subsequent books develop the theory in light of the Bible, the Atlantis myth, and the Tiahuanaco ruins.
His books investigate the work of Austrian cosmologist, Hans Hoerbiger and German selenographer, Philipp Fauth, whose now-defunct Cosmic Ice (Glacial Kosmogonie) Theory.
Bibelgriechisch lernen - dieses Buch will es leichtmachen. Es beschränkt sich deshalb auf das neutestamentliche Griechisch und beginnt so einfach, daß es auch der verstehen kann, der bisher keine Fremdsprache gelernt hat. Der wichtigste Teil des Buches besteht aus 72 Lektionen, die vom einfachsten - den griechischen Schriftzeichen - langsam, aber sicher zu den wichtigsten griechischen Formen führen.