Front Form Spinors in Weinberg-Soper Formalism and Melosh   Transformations for any Spin
  Using the Weinberg-Soper formalism we construct the front form $(j,0)\oplus(0,j)$ spinors. Explicit expressions for the generalised Melosh transformations up to spin two are obtained. The formalism, without explicitly invoking any wave equations, reproduces spin one half front-form results of Melosh, Lepage and Brodsky, and Dziembowski. 
D. V. Ahluwalia, and Mikolaj Sawicki