@article{MZM_2011_89_3_a5,
     author = {S. Sh. Kozhegel'dinov},
     title = {The {al-Husayn} {Equation} $x^4+y^2=z^2$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {365--377},
     publisher = {mathdoc},
     volume = {89},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2011_89_3_a5/}
}