@conference {nair2015robust, title = {Robust adaptive gain nonsingular fast terminal sliding mode control for spacecraft formation flying}, booktitle = {Decision and Control (CDC), 2015 IEEE 54th Annual Conference on}, year = {2015}, pages = {5314{\textendash}5319}, publisher = {IEEE}, organization = {IEEE}, author = {Nair, Ranjith Ravindranathan and Behera, Laxmidhar} }