Bar-Natan, Dror. “Khovanov’s Homology for Tangles and Cobordisms”. Geometry &Amp; Topology, vol. 9, no. 3, 2005, pp. 1443-99, https://doi.org/10.2140/gt.2005.9.1443.
Bar-Natan, D. (2005). Khovanov’s homology for tangles and cobordisms. Geometry &Amp; Topology, 9(3), 1443-1499. https://doi.org/10.2140/gt.2005.9.1443
Bar-Natan D. Khovanov’s homology for tangles and cobordisms. Geometry & Topology. 2005;9(3):1443-99.