1. There are infinitely many Carmicheal numbers;Alford;Ann. Math.,1994
2. Tools from higher algebra;Alon,1995
3. Combinatorial Nullstellensatz;Alon;Combin. Probab. Comput.,1999
4. Regular subgraphs of almost regular graphs;Alon;J. Combin. Theory Ser. B,1984
5. Een combinatorisch problem voor eindige abelse groepen, MC Syllabus 5, Colloquium Discrete Wiskunde;Baayen,1968