ArzhantsevI. V. and PetravchukA. P. (2007) “Closed polynomials and saturated subalgebras of polynomial algebras”, Ukrains’kyi Matematychnyi Zhurnal, 59(12), pp. 1587–1593. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3414 (Accessed: 24November2024).