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S. Gupta, S.V.N.T. Kuchibhatla, M.H. Engelhard, V. Shutthanandan, P. Nachimuthu, W. Jiang, L.V. Saraf, S. Thevuthasan and S. Prasad
Sensors and Actuators B: Chemical 139 ( 2 ): 380 - 386 , 2009