Let be a number field and a fixed quadratic extension of . In this paper and its companions, we find the mean value of the product of class numbers and regulators of two quadratic extensions contained in the biquadratic extensions of containing .
Anthony C. KABLE. Akihiko YUKIE. "The mean value of the product of class numbers of paired quadratic fields, II." J. Math. Soc. Japan 55 (3) 739 - 764, July, 2003. https://doi.org/10.2969/jmsj/1191419001