Haettel, T., Kielak, D., & Schwer, P. (2016). The 6-strand braid group is CAT(0). Springer.
Lua i Stíl Chicago (17ú heag.)Haettel, T., D. Kielak, agus P. Schwer. The 6-strand Braid Group Is CAT(0). Springer, 2016.
Lua MLA (9ú heag.)Haettel, T., et al. The 6-strand Braid Group Is CAT(0). Springer, 2016.
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