基数関数
↑ Holz, Michael; Steffens, Karsten; and Weitz, Edi (1999). Introduction to Cardinal Arithmetic. Birkhäuser. ISBN 3764361247
↑ Juhász, István: Cardinal functions in topology. "Mathematical Centre Tracts", nr 34. Mathematisch Centrum, Amsterdam, 1971.
↑ Juhász, István: Cardinal functions in topology - ten years later. "Mathematical Centre Tracts", 123. Mathematisch Centrum, Amsterdam, 1980.