Medvid’, I.M. (2008) “Higher-order parabolic variational inequality in unbounded domains”,
Ukrains’kyi Matematychnyi Zhurnal
, 60(7), pp. 949–968. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/3211
(Accessed: 14 April 2025).