@article{UFA_2021_13_1_a6,
     author = {N. M. Poluboyarova},
     title = {Relations between length  and instability of tubular extremal surfaces},
     journal = {Ufa mathematical journal},
     pages = {77--84},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2021_13_1_a6/}
}