The following publications are possibly variants of this publication:
- Hadamard ideals and Hadamard matrices with two circulant coresIlias S. Kotsireas, Christos Koukouvinos, Jennifer Seberry. ejc, 27(5):658-668, 2006. [doi]
- A New Existence Condition for Hadamard Matrices with Circulant CoreIlias S. Kotsireas, Panos M. Pardalos. lion 2014: 383-390 [doi]
- On circulant and two-circulant weighing matricesK. T. Arasu, Ilias S. Kotsireas, Christos Koukouvinos, Jennifer Seberry. ajc, 48:43-52, 2010. [doi]