BOOKS

5. K. Xu, K. C. Das, N. Trinajsti c, The Harary Index of a Graph, Springer, Berlin, Heidelberg, 2015 (Feb).

4. B.Tiwari, V.Tiwari, K. C. Das, D.K.Mishra,J. C.Bansal, Proceedings of International Conference on Recent Advancement on Computer and Communication, Lecture Notes in Networks and Systems, ICRAC 2017, Springer.

3. No. 19: I. Gutman, B. Furtula, K. C. Das, E. Milovanovic, I. Milovanovic (Eds.), Bounds in Chemical Graph Theory - Basics, University of Kragujevac and Faculty of Science Kragujevac, Kragujevac, Serbia.

2. No. 20: I. Gutman, B. Furtula, K. C. Das, E. Milovanovic, I. Milovanovic (Eds.), Bounds in Chemical Graph Theory - Mainstreams, University of Kragujevac and Faculty of Science Kragujevac, Kragujevac, Serbia.

1. No. 21: I. Gutman, B. Furtula, K. C. Das, E. Milovanovic, I. Milovanovic (Eds.), Bounds in Chemical Graph Theory - Advances, University of Kragujevac and Faculty of Science Kragujevac, Kragujevac, Serbia.