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Tripathi, Nimisha, Hills, Colin D., Choppala, Girish and Singh, Raj S. (2017) Modified chitosan for contaminated soil remediation. In: NexGen Technologies for Mining and Fuel Industries (Volume I and II). Allied Publishers Pvt Ltd, pp. 835-848. ISBN 978-93-85926-40-2

Tripathi, Nimisha, Choppala, Girish and Singh, Raj S. (2016) Evaluation of modified chitosan for remediation of zinc contaminated soils. Journal of Geochemical Exploration, 182 (B). pp. 180-184. ISSN 0375-6742 (Print), 1879-1689 (Online) (doi:10.1016/j.gexplo.2016.08.011)

Tripathi, Nimisha, Choppala, Girish, Singh, Raj S., Srivastava, Prashant and Sheshadri, Balaji (2016) Sorption kinetics of zinc and nickel on modified chitosan. Environmental Monitoring and Assessment, 188 (9):507. ISSN 0167-6369 (Print), 1573-2959 (Online) (doi:10.1007/s10661-016-5499-5)