THE RING OF WORDS IN MEDIEVAL LITERATURE
ULRICH GOEBEL AND DAVID LEE1993 年出版340 页ISBN：0889465780
LECTURE NOTES IN MATHEMATICS 1371: COMMUTATIVE COHERENT RINGS
1989 年出版347 页ISBN：3540511156;0387511156
New rings 500+ designs from around the world
Nicolas Estrada2011 年出版271 页ISBN：0500289334
WAGNER AND AESCHYLUS:The Ring and the Oresteia
MICHAEL EWANS1982 年出版271 页ISBN：0571118089
The red blazer girls : the ring of Rocamadour
Michael D. Beil2009 年出版300 页ISBN：
Graduate Texts in Mathematics 43 Rings of Continuous Functions
1960 年出版300 页ISBN：0387901981
100 GAA GREATS FROM CHRISTY RING TO JOE CANNING
JOHN SCALLY2010 年出版334 页ISBN：9781845965648
