Aleksandar is the ISAR Education Director. He is also the founder of Johannes Kepler Astrological Institute that is based in Belgrade Serbia.

Alekzandar has been an astrologer for more than 25 years. He teaches meidtation, has written eleven astrology books, and has organized annual International Astrological Conferences in Belgrade since 2001. His work is based on a symthesis of Western and Eastern methods.

Dr. Lea Imsiragic is an MSci in magneto biology in the medical faculty. She is an ISAR CAP, and a consulting skills trainer/

She combines knowledge from different fields with astrology. As an astologer, Lea specializes in business astrology and Astro-Medicine.

Dr. Lea Imsiragic graduated in acupuncture, energy psychology, and flower essence therapy. She combines all of her expertise with astrology in order to create the satrological system for diagnois and healing of which she calls "Energy Astrology". She is also a teacher at the Johannes Kepler Institute in Belgrade. She authroed 5 astrology books.