1. Mukul Kulshrestha is Research Scholar, Indo-French Unit for Water and Waste Technologies (IFUWWT), Department of Civil Engineering, Indian Institute of Technology (IIT), Delhi 110 016, & Faculty Member, Department of Civil Engineering, MANIT, Bhopal 462 007;.
2. Atul K. Mittal is Coordinator, IFUWWT, IIT, Delhi..