@article{SM_2023_214_8_a2,
     author = {A. Yu. Konyaev},
     title = {Symmetric matrices and maximal {Nijenhuis} pencils},
     journal = {Sbornik. Mathematics},
     pages = {1101--1110},
     year = {2023},
     volume = {214},
     number = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2023_214_8_a2/}
}