%% -*-BibTeX-*- @Article{GroetschelMartinWeismantel1996a, author = "Martin Gr{\"o}tschel and Alexander Martin and Robert Weismantel", title = "Packing Steiner Trees: Further Facets", journal = "European Journal of Combinatorics", volume = "17", number = "1", pages = "39--52", year = "1996", classmath = "*05C70 05C38 68R10 05C05", language = "English", }