The following publications are possibly variants of this publication:
- Discrete time-varying filter and PLL for synchronous estimation of parameters of a sine signal corrupted by a closely spaced FM interferenceDov Wulich, Eugene I. Plotkin, M. N. S. Swamy. sigpro, 21(2):183-194, 1990. [doi]
- Self-synchronized signal controlled constrained notch filter for rejection of nonstationary interferenceWen Tong, Eugene I. Plotkin, Dov Wulich, M. N. S. Swamy. icassp 1991: 1937-1940 [doi]
- Constrained notch filtering of nonuniformly spaced samples for enhancement of an arbitrary signal corrupted by a strong FM interferenceDov Wulich, Eugene I. Plotkin, M. N. S. Swamy. tsp, 39(10):2359-2363, 1991. [doi]
- Time-varying analogue constrained notch filterDov Wulich. ijcta, 21(1):35-40, 1993. [doi]