@article{SM_2021_212_3_a1,
     author = {B. M. Bekker and Yu. G. Zarhin},
     title = {Versal families of elliptic curves with rational 3-torsion},
     journal = {Sbornik. Mathematics},
     pages = {274--287},
     year = {2021},
     volume = {212},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2021_212_3_a1/}
}