@article{RM_2021_76_2_a0, author = {A. I. Bondal and I. Yu. Zhdanovskiy}, title = {Theory of homotopes with applications to mutually unbiased bases, harmonic analysis on graphs, and perverse sheaves}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {195--259}, publisher = {mathdoc}, volume = {76}, number = {2}, year = {2021}, language = {en}, url = {http://geodesic.mathdoc.fr/item/RM_2021_76_2_a0/} }