In-vivo Hepatoprotective Activity of Methanolic Extracts of Sphaeranthus amaranthoides and Oldenlandia umbellate, De, Somnath, Suresh Ramalingam, Babu Akula Murali Sri, and Aneela Siddabathuni , Pharmacognosy Journal, November 2016, Volume 9, Issue 1, p.98-101, (2017)