SSSS, of course, refers to the famous, if contentious, Advaitin Sri Satchidanandendra Saraswati Swamiji (1880 – 1975).

In 2014, I wrote a review of the article “A New Approach to Understanding Advaita as Taught by Sankara Bhagavadpada” by Ramakrishnan Balasubramanian – https://www.advaita-vision.org/review-of-article-by-ramakrisnan-subramanian/. The article was very critical of SSSS and my review provided a defense. 

SSSS’s book “Salient Features of Ṥaṅkara’s Vedānta’ has an introduction by Prof. S.K. Ramachandra Rao and the latter makes the following points: