PAI, VENKETESWARA R.; Ramasubramanian, K.; Sriram, M. S.; Srinivas, M. D.
(Springer Nature, 2018-03)
May the diameter be multiplied by four, kept separately at several places, and divided by the odd numbers 3, 5, 7 etc. [The results] may be sequentially applied negatively and positively to the diameter multiplied by four. ...