Schölzel, Karsten A Sheffer-criterion for partial 4-valued logic. (English) Zbl 1236.08011 J. Mult.-Val. Log. Soft Comput. 18, No. 2, 167-199 (2012). MSC: 08A40 03B50 08A55 PDFBibTeX XMLCite \textit{K. Schölzel}, J. Mult.-Val. Log. Soft Comput. 18, No. 2, 167--199 (2012; Zbl 1236.08011)
Schölzel, Karsten Uniqueness of minimal coverings of maximal partial clones. (English) Zbl 1232.08003 Algebra Univers. 65, No. 4, 393-420 (2011). Reviewer: Radomír Halaš (Prostejov) MSC: 08A55 03B50 08A40 PDFBibTeX XMLCite \textit{K. Schölzel}, Algebra Univers. 65, No. 4, 393--420 (2011; Zbl 1232.08003) Full Text: DOI