# Using natbib and plainnat - no year appears to some references and also et al. not in Italics

I use natbib and plainnat for bibliography, I use \citep.

1. The reference appears with et al. that is not italics – how do I change that?
2. Some references just appear with no year. How to fix that?
3. When same author and not same year, how do I get rid from the a,b notation of the same author? I tried garynat instead of plainnat and it solved the italics of et al. but still problem with the missing year.
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