https://www.youtube.com/watch?v=6lovzhwqedY
The Astra Project
https://www.youtube.com/c/TheAstraProject/videos
Helnea Avelar (1964 – 2021)– http://skyscript.co.uk/forums/viewtopic.php?p=117576&sid=1ec902ec040b168d15351079f72dbd53
Astrology Podcast interview with both Helena Avelar and Luis Ribeiro from 2019 with Chris Brennan
https://www.youtube.com/watch?v=axei1E8Gj_E&t=1606s
History of Modern Astrology video interview by Helena Avelar and Luis Ribeiro
https://www.youtube.com/watch?v=1aYJe6YzDtI
Helena Avelar and Luis Ribeiro on Traditional Astrology
https://www.youtube.com/watch?v=axei1E8Gj_E&t=1605s
Dr. Helena Avelar – Astra Project – Traditional Astrology
https://www.youtube.com/watch?v=M1rb7fpEUTU&t=31s
An Astrologer at Work in Late Medieval France: The Notebooks of S. Belle (Time, Astronomy, and Calendars, Band 11)
https://sas-space.sas.ac.uk/9460/1/Helena%20Avelar%20de%20Carvalho%20-Warburg-PhD%20Thesis.pdf
