96 citations · 292 across the 62 of their papers we have counts for
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math.CO2009★ 6 cited
Steiner quadruple systems with point-regular abelian automorphism groups
Akihiro Munemasa, Masanori Sawa
In this paper we present a graph theoretic construction of Steiner quadruple systems (SQS) admitting abelian groups as point-regular automorphism groups. The resulting SQS has an e…
math.CO2009
The twisted Grassmann graph is the block graph of a design
Akihiro Munemasa, Vladimir D. Tonchev
In this note, we show that the twisted Grassmann graph constructed by van Dam and Koolen is the block graph of the design constructed by Jungnickel and Tonchev. We also show that t…