How does wien-bridge oscillator works??

Hi,
I will be glad if someone provides me with some information about this oscillator.
Also, if you recommend any web-pages that i should reffer to in order to get more information, please list them down.

Thanks

For a start try https://www.google.com this will give you plenty of information.

goto www.nsc.com, find application note AN-20, Figure 24.

Don't forget wikipedia

thanks brothers Nigel Goodwin, Russlk and Sceadwian
Google, Yahoo and Altavista...this time (didnt help as they take me to companies websites which are dealing with more specific information (data sheets, etc...)
However,
i searched about it, Wikipedia helped me a little to understand it.

Thanks to all of u