A new method for computing asymptotics of diagonal coefficients of multivariate generating functions. Raichev, A. & Wilson, M. C. In 2007 Conference on Analysis of Algorithms, AofA 07, of Discrete Math. Theor. Comput. Sci. Proc., AH, pages 439-449, 2007. Assoc. Discrete Math. Theor. Comput. Sci., Nancy.
A new method for computing asymptotics of diagonal coefficients of multivariate generating functions [link]Link  abstract   bibtex   
Let $∑_{\mathbf{n}∈ℕ^d} F_\mathbf{n} \mathbf{x}^\mathbf{n}$ be a multivariate generating function that converges in a neighborhood of the origin of $ℂ^d$. We present a new, multivariate method for computing the asymptotics of the diagonal coefficients $F_{a_1n,…,a_dn}$ and show its superiority over the standard, univariate diagonal method. Several examples are given in detail.

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