KUČERA, Radan. Formulae for the relative class number of an imaginary abelian field in the form of a product of determinants.
Acta Mathematica et Informatica Universitatis Ostraviensis. ČR, Ostrava: Ostravská univerzita, 2002, vol. 10, No 1, p. 79-83. ISSN 1211-4774.