A New Proof of a Classical Theorem in Design Theory

G.B. Khosrovshahi, B. Tayfeh-Rezaie
2001 Journal of combinatorial theory. Series A  
We present a new proof of the well known theorem on the existence of signed (integral) t-designs due to Wilson and Graver and Jurkat.
doi:10.1006/jcta.2000.3116 fatcat:tj6idggllbeqhn2ukq67uz452y