[1]
LagodaV. A. and ParasyukI. O., “Theorem on the existence of an invariant section over $\mathbb{R}^m$ for the indefinite monotone system in $\mathbb{R}^m \times \mathbb{R}^n$”, Ukr. Mat. Zhurn., vol. 65, no. 1, pp. 103-118, Jan. 2013.