1. Die Polynomialverteilung;FISZ,1973
2. The conditions under which χ² measures the discrepancy between observation and hypothesis;FISHER;J. Royal Statist. Soc.,1924
3. Ueber das Kennzeichnen (About Denotation);RUSSELL,1971
4. Tractatus logico-philosophicus;Wittgenstein,1973
5. Logische Syntax der Sprache;Carnap,1968