@article{UFA_2021_13_2_a13,
     author = {S. Ya. Startsev},
     title = {On {Darboux} non-integrability   of {Hietarinta} equation},
     journal = {Ufa mathematical journal},
     pages = {160--169},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2021_13_2_a13/}
}