Bierstedt K.-D., Bonet J. (1988) Dual density condition in (DF)-spaces (with applications to vector-valued co-echelon spaces and weighted inductive limits). Results in Math. 14:242-274.
.
Bierstedt K.-D., Meise R., Summers W.H. (1982) A projective description of weighted inductive limits. Transactions of the American Mathematical Society 272:107-160.
Bonet J. (1986) On weighted inductive limits of spaces of continuous functions. Math. Z. 192:9-20.
Ernst B., Schnettler P. (1986) On weighted spaces with a fundamental sequence of bounded sets. Arch. Math. 47:552-559.