Context Sensitive Languages and Linear Bounded Automata: A set of slides defining these terms and showing that context sensitive languages are accepted by linear bounded automata.
Context-sensitive Language: A Wikipedia article which defines context sensitive languages in terms of context sensitive grammars which are defined in a linked article.
Turing Machines and Context Sensitive Grammars: A set of slides briefly describing Turing machine, the more restrictive linear bounded automata and an example of construction of a context sensitive grammar.