# Supersymmetric Sigma Model

I was working through the Mirror Symmetry book by Clay Math Institute. It deals with supersymmetric sigma model in 10.4 section. It doesn't derive how the action is invariant under the variation. I am trying hard, but stuck at few places. Does any one have any references for such a calculations ? The Lagrangian and variation is given in the following image.

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Related question: physics.stackexchange.com/q/52462/2451 – Qmechanic Feb 1 '13 at 17:29
Please type equations instead of pasting images. Images make editing impossible, suffer the possibility of link rot, are harder to read, and cannot be searched. – DanielSank Nov 14 at 6:47
@DanielSank : My apologies, I shall enter the equations from now on. – Jaswin Nov 18 at 6:54