On the weak observability of small solutions of differential-algebraic systems with delays
Marchenko, V. M., Марченко, В. М., Zaczkiewicz, Z.
On the weak observability of small solutions of differential-algebraic systems with delays, Text
Труды Белорусского государственного технологического университета. Серия 6. Физико-математические науки и информатика, 2008, Вып. XVI. - С. 6-8