Links
[1] https://www.hootsgo.org/?q=node/6549
[2] https://bineeshthomas.wordpress.com/2010/08/18/vedic-maths-sutra-1-ekadhikena-purvena-by-one-more-than-the-previous-one/
[3] http://mathlearners.com/vedic-mathematics/division-in-vedic-mathematics/special-types/ekadhikena-purvena/
[4] http://www.hitxp.com/articles/veda/vedic-mathematics-lesson-ekadhikena-purvena-squares-multiplication-division/
[5] http://en.wikibooks.org/wiki/Vedic_Mathematics/Sutras/Ekadhikena_Purvena