Fomichev, V. V. (2017). Level-crossing intensity for the density of the image of the Lebesgue measure
under the action of a Brownian stochastic flow.
Ukrains’kyi Matematychnyi Zhurnal,
69(6), 803-822.
https://umj.imath.kiev.ua/index.php/umj/article/view/1736