Chernoyarov, O.V., Vybornov, S.V., Golpaiegany, L., Chernoiarova, E.V. and Makarov , A.A. 2025. On The Efficiency of Receiving a Stepwise Gaussian Random Disturbance With an Unknown Moment of Appearance and Central Frequency. Pakistan Journal of Statistics and Operation Research. 21, 4 (Dec. 2025), 429-446. DOI:https://doi.org/10.18187/pjsor.v21i4.4702.