1. Alspach D.E.: Tensor products and independent sums of $${\mathcal{L}_p}$$ L p spaces, $${1< p< \infty}$$ 1 < p < ∞ . Mem. Am. Math Soc. 138(660), viii–77 (1999)
2. Alspach D.E.: On the complemented subspaces of X p . Israel J. Math. 74, 33–45 (1991)
3. Bourgain J., Rosenthal H.P., Schechtman G.: An ordinal L p index for Banach spaces with an application to complemented subspaces of L p . Ann. Math. 114, 193–228 (1981)
4. Haydon, R., Odell, E., Schulumprechet, T.: Small subspaces of L p . Ann. Math. 173, 169–209 (2011)
5. Johnson W.B., Odell E.: Subspaces of L p which embed into $${\ell_p}$$ ℓ p . Compos. Math. 28, 37–49 (1974)