@article{MEM_2021_50_a20,
     author = {Petrova, Valentina},
     title = {A decision hierarchical model of cyber security risk assessment},
     journal = {Mathematics and Education in Mathematics},
     pages = {191--195},
     publisher = {mathdoc},
     volume = {50},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MEM_2021_50_a20/}
}