On the classification and enumeration of self-dual codes

This article is a survey of the current status of the classification and enumeration of self-dual linear codes of small to moderate lengths over the fields F2, F3, and F4 and the rings Z4, F2+uF2, and F2+vF2. Self-duality is considered using a variety of inner products. We also examine formally self-dual binary codes and additive self-dual codes over F4.