Books:

1. Dr. Rakesh Dube, Dr. Nimisha, Dr. O. P. Chaudhary, (2017) "Higher Mathematics for Science and Engineering ", https://manakinpress.com/product/higher-mathematics-for-science-engineering/, First, Manakin Press, New Delhi, isbn: 9789384370237,page no: 1590;

2. Dr. Rakesh Dube, Dr. O. P. Chaudhary, Dr. Nimisha , (2016) "Engineering Mathmatics-1", https://manakinpress.com/product/engineering-mathematics-iassignment-tutorial-approach-fully-solved/, First, Manakin Press, New Delhi, isbn: 9789384370268,page no: 694;