C# - Assembly Qualified Names Explained.

Syntax:
<appSettings>
<add key="IPersonRepository"
         value="Generics.Repository.PersonRepository.PersonServiceRepository,
                     Generics.Repository, Version= 1.0.0.0, Culture=neutral" />

</appSetting>
Somewhat Explained Syntax:

<add key="IPersonRepository"
         value="{Full namespace name},
                     {The Dll its going to look in}, Version= 1.0.0.0, Culture=neutral" />

</appSetting>