@article{MZM_2019_106_2_a8,
     author = {S. N. Popova},
     title = {On {Sums} of {Products} in~$\mathbb F_p\times \mathbb F_p$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {262--279},
     publisher = {mathdoc},
     volume = {106},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2019_106_2_a8/}
}