Green-Schwarz action for Type IIA strings on AdS4×CP3

We present the Green-Schwarz action for Type IIA strings on AdS4×CP3. The action is based on a Z4 automorphism of the coset OSp(4|6)/(SO(1,3)×SU(3)×U(1)). The equations of motion admit a representation in terms of a Lax connection, showing that the system is classically integrable.