@article{ZNSL_2020_491_a8,
     author = {A. Tselishchev},
     title = {Absence of local unconditional structure in spaces of smooth functions on the two-dimensional torus},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {153--172},
     publisher = {mathdoc},
     volume = {491},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2020_491_a8/}
}