Selinger, Peter (2011). "A survey of graphical languages for monoidal categories". New Structures for Physics. Lecture Notes in Physics. Vol. 813. Springer. pp. 289–233. arXiv:0908.3347. Bibcode:2009arXiv0908.3347S.
Selinger, Peter (2011). "A survey of graphical languages for monoidal categories". New Structures for Physics. Lecture Notes in Physics. Vol. 813. Springer. pp. 289–233. arXiv:0908.3347. Bibcode:2009arXiv0908.3347S.