Marc Seigar | Morgan and Claypool Publishers, 2017 | Book
This book reviews the history behind the discovery of spiral galaxies and the problems faced when trying to explain the existence of spiral structure. You will find subjects such as galaxy morphology and structure as well as several models for spiral structure. It is an easy-to-read book.
James Binney and Scott Tremaine | Princeton University Press, 2008 | Book
This book is one of the most widely used advanced textbooks on the structure and dynamics of galaxies.
R. Buta and F. Combes | Fundamentals of Cosmic Physics, 1996 | Article
This is an important review article, which is all about ring structures.