Schmid, Wolfgang A. “The Inverse Problem Associated to the Davenport Constant for $C_2\oplus C_2 \oplus C_{2n}$, and Applications to the Arithmetical Characterization of Class Groups”. The Electronic Journal of Combinatorics 18, no. 1 (February 14, 2011): P33. Accessed April 1, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v18i1p33.