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     2. [AN47FA: High Speed Amplifier Techniques, A Designer’s Companion for Wideband Circuitry](https://www.analog.com/media/en/technical-documentation/application-notes/an47fa.pdf)
 2. [Unitrode Design Handbook](https://www.ti.com/seclit/ml/slup132/slup132.pdf)
 3. [TI Power Supply Design Seminars](https://www.ti.com/design-resources/seminars/power-supply-design-seminar-psds/psds-resources.html)
-4. [Power Supply Design Resource Center Group on Fcebook (Moderated? by Ray Ridley)](https://www.facebook.com/groups/1879510808953399)
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+4. [Power Supply Design Resource Center Group on Fcebook (Moderated? by Ray Ridley)](https://www.facebook.com/groups/1879510808953399)
+-