Razborov, Alexander A.; Rudich, Steven Natural proofs. (English) Zbl 0884.68055 J. Comput. Syst. Sci. 55, No. 1, 24-35 (1997). MSC: 68Q15 PDFBibTeX XMLCite \textit{A. A. Razborov} and \textit{S. Rudich}, J. Comput. Syst. Sci. 55, No. 1, 24--35 (1997; Zbl 0884.68055) Full Text: DOI
Radhakrishnan, Jaikumar Better lower bounds for monotone threshold formulas. (English) Zbl 0877.68062 J. Comput. Syst. Sci. 54, No. 2, 221-226 (1997). MSC: 68W10 PDFBibTeX XMLCite \textit{J. Radhakrishnan}, J. Comput. Syst. Sci. 54, No. 2, 221--226 (1997; Zbl 0877.68062) Full Text: DOI Link
Radhakrishnan, Jaikumar; Subrahmanyam, K. V. Directed monotone contact networks for threshold functions. (English) Zbl 0807.68057 Inf. Process. Lett. 50, No. 4, 199-203 (1994). MSC: 68Q25 68R10 PDFBibTeX XMLCite \textit{J. Radhakrishnan} and \textit{K. V. Subrahmanyam}, Inf. Process. Lett. 50, No. 4, 199--203 (1994; Zbl 0807.68057) Full Text: DOI