# Publications

## Perturbation Theory (Encyclopedia article)

My encyclopedia entry **Perturbation Theory** (co-authored with Rob Corless) will soon appear in the **Sage Encyclopedia of Theory**.

**Title:**

Perturbation Theory**Authors:**

Nicolas Fillion**Volume:**

The Sage Encyclopedia of Theory, J. Mattingly (Ed.), Sage, forthcoming.

#### Additional information

Cite as (APA format):

Fillion, N. & Corless R.M. (forthcoming). Perturbation Theory, in: *The Sage Encyclopedia of Theory*, J. Mattingly (ed.), Sage.

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