1. Exponential lower bounds for the number of Skolem and extremal Langford sequences;Abrham;Ars Combin.,1986
2. Non-orientable biembeddings of Steiner triple systems of order 15;Bennett;Acta Math. Univ. Comenianae,2004
3. Orientable self-embeddings of Steiner triple systems of order 15;Bennett;Acta Math. Univ. Comenianae,2006
4. Exponential lower bounds for the numbers of Skolem-type sequences;Bennett;Ars Combin.,2004
5. The CRC Handbook of Combinatorial Designs,2007