[1]
The Astronomical Almanac for the year 2013,
U.S. Governmenmt Printing Office, 2012, Washington (U.S.),
(F1- F51), (G1-G24)
[2]
Explanatory Supplement to the Astronomical Almanac, 3rd Edition,
University Science Book, 2013, Mill Valley,CA (U.S.),
(p. 17, 32, 338-340, 354-356, 367-397)
[3]
The Handbook of the British Astronomical Association 2024
British Astronomical Association, 25 Farrington Street, London, October 2023,
(p. 21, 28, 48, 49, 92, 93, 115)
[4]
Computer Graphics, 2nd Edition,
Donald Hearn, M. Pauline Baker,
Prentice Hall, Upper Saddle River, (New Jersey), 1994
(chapter 12)
[5]
dtv-Atlas Astronomie
Joachim Herrmann
14. Auflage, April 2000
Deutscher Taschenbuchverlag München
(p. 60)
[6]
Planetenbahnen
Eine kleine Einführung in die Himmelsmechanik
Mathias Scholz, 2012
Links:
[7a]
https://www.stjarnhimlen.se/comp/ppcomp.html
short but precisely, well written introduction in astronomical geometry theory
remarkable work by Paul Schlyter, Sweden, Stockholm