On the Green function for a boundary value problem on a graph
I. G. Karelina, Yu. V. Pokornyi

This publication is cited in the following articles:

1. Yu. V. Pokornyi, V. L. Pryadiev, “Some problems of the qualitative Sturm–Liouville theory on a spatial network”, Russian Math. Surveys, 59:3 (2004), 515–552