On the convergence of product-sum series of $L$-$R$ fuzzy numbers
Fuzzy Sets and Systems 53 (1993), no. 2, 189--192.
BibTex references
@Article\{Tri93a,
author = "Triesch, Eberhard",
title = "On the convergence of product-sum series of $L$-$R$ fuzzy numbers",
journal = "Fuzzy Sets and Systems",
number = "2",
volume = "53",
pages = "189--192",
year = "1993",
}