Definition:Integral Calculus/Historical Note

Historical Note on Integral Calculus
Much of the early work developing integral calculus was done by.

His initial work on this seems to have been achieved during the years $1665$ to $1667$ when he was at home in Woolsthorpe.

At the same time that was arranging his thesis,  was publishing many papers himself on the same subject.

The rigorous treatment of the subject was developed later, by, and.