List of papers studied when designing Badger

In this blog post @mrjn mentions that while developing Badger, you Dgraph guys read some papers on distributed transactions:

Do you guys remember what the other 5 papers were, and if so, could you provide the links, please?

Thanks.

To partially answer my own question, I’ve found these two links in the blogs:

I’d be interested in knowing what the other ones were, though.