%0 Journal Article
%A Manko, Stepan
%T Quantum-graph vertex couplings: some old and new approximations
%J Mathematica Bohemica
%D 2014
%P 259-267
%V 139
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/MB.2014.143853/
%R 10.21136/MB.2014.143853
%G en
%F 10_21136_MB_2014_143853