In this paper, we give a simple proof of the functional relation for the Lerch type Tornheim double zeta function. By using it, we obtain simple proofs of some explicit evaluation formulas for double $L$-values.
"A Simple Proof of the Functional Relation for the Lerch Type Tornheim Double Zeta Function." Tokyo J. Math. 35 (2) 333 - 337, December 2012. https://doi.org/10.3836/tjm/1358951322