Decomposability of operators relative to two subspaces

Citation:

Katavolos A. Decomposability of operators relative to two subspaces. In: Selfadjoint and nonselfadjoint operator algebras and operator theory ({F}ort {W}orth, {TX}, 1990). Vol. 120. Amer. Math. Soc., Providence, RI; 1991. pp. 77–81.