per or as per

[Summer2014]

I am trying to describe a theory proposed by a paper, and I am not sure whether I should 'per' or 'as per'. And what's the exact meaning of the correct usage? Does it mean 'according to' (which is my understanding, although I am not sure...)? It would be great if I could get some help here. Thanks!

...the theory per Sun et al. (2000)
...the theory as per Sun et al. (2000)

 

[riquecohen]

They are essentially the same. They do, generally, mean "according to" and that is the phrase I would use.

 

[MikeNewYork]

I would go with "as per'.