Arudha System of Prediction by C S Patel
The Arudha pada system is a peculiar one in which degrees of planets, Vargas of Signs, mathematical calculations etc.are not considered. Only the natal chart is enough. The predictions promised by lagna Arudha, Bhava Arudha and Graha Arudha take place during the currency of periods of those planets in their dasas.
Ashtaka Varga by C S Patel and C. A. Subramania Aiyar
Predicting Through Navamsa and Nadi Astrology by C S Patel