@article{TAC_2009_22_a1,
     author = {D. N. Yetter},
     title = {On deformations of pasting diagrams},
     journal = {Theory and applications of categories},
     pages = {24--53},
     publisher = {mathdoc},
     volume = {22},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2009_22_a1/}
}