@article{MZM_2024_115_3_a10,
     author = {A. O. Chebotarenko},
     title = {On {Angles} between {Linear} {Subspaces} in $\mathbb R^4$ and the {Singularity}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {450--457},
     year = {2024},
     volume = {115},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2024_115_3_a10/}
}