Varbanov, Z. G. Self-orthogonal codes over \(\mathbb F_4\) and new quantum codes. (English) Zbl 1202.94221 Bulg. J. Phys. 36, No. S1, 79-85 (2009). MSC: 94B05 94B60 81P70 PDFBibTeX XMLCite \textit{Z. G. Varbanov}, Bulg. J. Phys. 36, No. S1, 79--85 (2009; Zbl 1202.94221) Full Text: Link
Krahmer, F.; Pfander, G.; Rashkov, P. Applications of the uncertainty principle for finite abelian groups to communications engineering. (English) Zbl 1202.94011 Bulg. J. Phys. 36, No. S1, 54-59 (2009). MSC: 94A05 42C15 PDFBibTeX XMLCite \textit{F. Krahmer} et al., Bulg. J. Phys. 36, No. S1, 54--59 (2009; Zbl 1202.94011) Full Text: Link
Stanilov, G. Four dimensional Hankel geometry. (English) Zbl 1202.53019 Bulg. J. Phys. 36, No. S1, 27-30 (2009). MSC: 53A40 PDFBibTeX XMLCite \textit{G. Stanilov}, Bulg. J. Phys. 36, No. S1, 27--30 (2009; Zbl 1202.53019) Full Text: Link
Todorov, K.; Koppitz, J.; Dimitrova, I. Maximal idempotent generated subsemigroups of ideals of the semigroup of all isotone transformations. (English) Zbl 1202.20070 Bulg. J. Phys. 36, No. S1, 19-26 (2009). MSC: 20M20 20M05 20M12 PDFBibTeX XMLCite \textit{K. Todorov} et al., Bulg. J. Phys. 36, No. S1, 19--26 (2009; Zbl 1202.20070) Full Text: Link