MISHRA, Y., R. RAWAT, B. NEMA, and F. SHIRIN. “Effect of Seed Orientation and Medium Strength on In Vitro Germination of Pterocarpus Marsupium Roxb”. Notulae Scientia Biologicae, vol. 5, no. 4, Dec. 2013, pp. 476-9, doi:10.15835/nsb549124.