Furthermore, I've created an Anki flash card set for the L2 formulas. It can be seen at this address, install the Anki app to your desktop, import the URL, and you've got the cards. Then you can create an AnkiWeb account (for free) and upload the cards to your web account to access on the move. Once all this is done you can then download the iPhone/Android Anki app and you have the flash cards on your phone too.
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