The Walsh basis in the Lp-spaces of hyperfinite III_\lambda-factors, 0 <   \lambda <= 1
  We introduce a non-commutative Walsh system and prove that it forms a Schauder basis in the Lp-spaces (1 < p < \infty) associated with the hyperfinite III_\lambda-factors (0 < \lambda <= 1). 
M. Caspers, D. Potapov, F. Sukochev
math.OA math.FA