Ryabukhin, Yu. N. Über Primäritäten. II. (Russian) Zbl 0261.17004 Mat. Issled. 2, No. 2(4), 133-146 (1967). MSC: 17A99 06F05 PDFBibTeX XMLCite \textit{Yu. N. Ryabukhin}, Mat. Issled. 2, No. 2(4), 133--146 (1967; Zbl 0261.17004)
Ryabukhin, Yu. N. Über Primäritäten. I. (Russian) Zbl 0261.17003 Mat. Issled. 2, No. 1(3), 67-82 (1967). MSC: 17A99 PDFBibTeX XMLCite \textit{Yu. N. Ryabukhin}, Mat. Issled. 2, No. 1(3), 67--82 (1967; Zbl 0261.17003)
Ryabukhin, Yu. N. Radikale in Kategorien. (Russian) Zbl 0248.18013 Mat. Issled. 2, No. 3(5), 107-165 (1967). MSC: 18A99 16Nxx 17A99 18E40 PDFBibTeX XMLCite \textit{Yu. N. Ryabukhin}, Mat. Issled. 2, No. 3(5), 107--165 (1967; Zbl 0248.18013)