Anastasova, K. I.; Stoeva, K. S.; Bobeva, A. N. Generalization of an inverse problem for a nonlinear equation of neutral type. (Bulgarian. English, Russian summaries) Zbl 0644.34070 God. Vissh. Uchebn. Zaved., Prilozhna Mat. 21(1985), No. 1, 101-112 (1986). Reviewer: I.Gumowski MSC: 34K99 34E05 × Cite Format Result Cite Review PDF
Anastasova, K. I.; Stoeva, K. S.; Bobeva, A. N. On an inverse problem for a nonlinear equation of neutral type. (Bulgarian. English, Russian summaries) Zbl 0597.34008 God. Vissh. Uchebn. Zaved., Prilozh. Mat. 20(1985), No. 3, 71-81 (1984). MSC: 34A55 × Cite Format Result Cite Review PDF
Cankova, M. G.; Bobeva, A. N. On the existence of periodic oscillations of an autonomous mechanical system in case of inner resonance. (Bulgarian) Zbl 0314.34045 God. Vissh. Tekh. Uchebn. Zaved., Mat. 9(1973), No. 4, 121-128 (1974). MSC: 34C25 70K99 × Cite Format Result Cite Review PDF