Hi! I am looking for a review article on extended N=4 supersymmetry in 3=2+1 spacetime dimensions. (8 supercharges in total). I am familiar with the N=1, d=4 case, but now I need to study the N=4, d=3. Is anyone aware of the existence of such an introductory article, or a book in which this case is treated, starting from the basics? In particular I need to understand how to write the SuperYangMills lagrangian, coupled with the matter hypermultiplets. What does it change from the N=1 case? Thanks for the advice.