Konstantinov, M.; Petkov, P. The least squares method can be misleading. (English) Zbl 1291.65160 God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 45(2010-2012), 17-24 (2014). MSC: 65H10 65H05 PDFBibTeX XMLCite \textit{M. Konstantinov} and \textit{P. Petkov}, God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 45, 17--24 (2014; Zbl 1291.65160)
Ionchev, Andrey; Konstantinov, Mihail; Petkov, Petko Perturbation bounds of the discrete-time \(\mathcal {H}_\infty\) LMI based synthesis problem. (English) Zbl 1264.93052 God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 43-44(2004-2009), 91-98 (2012). MSC: 93B36 93B50 93C73 PDFBibTeX XMLCite \textit{A. Ionchev} et al., God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 43--44, 91--98 (2012; Zbl 1264.93052)
Konstantinov, M. M.; Petkov, P. Kh.; Khristov, N. D. In memoriam Simeon P. Patarinski (1948–1993). (Bulgarian. English summary) Zbl 1103.01314 God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 42(2002-2003), 189-198 (2006). MSC: 01A70 PDFBibTeX XMLCite \textit{M. M. Konstantinov} et al., God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 42, 189--198 (2006; Zbl 1103.01314)
Yonchev, A. S.; Petkov, P. H. Numerical comparison of methods for continuous-time \({\mathcal H}_\infty\) optimization. (English) Zbl 1105.93029 God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 42(2002-2003), 41-55 (2006). MSC: 93B36 93B40 PDFBibTeX XMLCite \textit{A. S. Yonchev} and \textit{P. H. Petkov}, God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 42, 41--55 (2006; Zbl 1105.93029)
Boneva, J. K.; Konstantinov, M. M.; Petkov, P. H. Perturbation bounds for the solution of the associated generalized algebraic Riccati equation. (English) Zbl 1102.15010 God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 42(2002-2003), 7-20 (2006). MSC: 15A24 93B35 PDFBibTeX XMLCite \textit{J. K. Boneva} et al., God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 42, 7--20 (2006; Zbl 1102.15010)
Konstantinov, M. M.; Angelova, V. A.; Petkov, P. H.; Popchev, I. P. Comparison of perturbation bounds for the matrix equation \(X=A_1+A^H_2X^{-1}A_2\). (English) Zbl 1226.15011 God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 41(2000-2001), 75-82 (2003). MSC: 15A24 PDFBibTeX XMLCite \textit{M. M. Konstantinov} et al., God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 41, 75--82 (2003; Zbl 1226.15011)
Konstantinov, M.; Petkov, P.; Angelova, V. Perturbation analysis of symmetric fractional affine matrix equations. (English. Russian summary) Zbl 1226.15010 God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 39(1996-1997), 45-74 (1999). MSC: 15A24 93C05 PDFBibTeX XMLCite \textit{M. Konstantinov} et al., God. Univ. Arkhit. Stroit. Geod. Sofiya, Svitk II, Mat. Mekh. 39, 45--74 (1999; Zbl 1226.15010)