add reference

ranocha · Mar 31, 2020 · a286f38 · a286f38
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diff --git a/README.md b/README.md
@@ -18,3 +18,7 @@ This is work in progress. Currently, the following functions are implemented.
 - `group_sparse_total_variation_denoising(y::AbstractVector, λ::Number; group_size::Integer=1, max_iter::Integer=100)`
   Compute `max_iter` iterations of the algorithm described by
   [Selesnick and Chen (2013) Total variation denoising with overlapping group sparsity](https://doi.org/10.1109/ICASSP.2013.6638755).
+- `fourier_pade(x, u, degree_num, degree_den)`
+  Compute the Fourier-Padé reconstruction of `u` with degrees
+  `(degree_num, degree_den)` and evaluate it at the points `x`,
+  cf. [Driscoll and Fornberg (2001) A Padé-based algorithm for overcoming the Gibbs phenomenon](https://doi.org/10.1023/A:1016648530648).
diff --git a/src/fourier_pade.jl b/src/fourier_pade.jl
@@ -2,7 +2,9 @@
     fourier_pade(x, u, degree_num, degree_den)
 
 Compute the Fourier-Padé reconstruction of `u` with degrees
-`(degree_num, degree_den)` and evaluate it at the points `x`.
+`(degree_num, degree_den)` and evaluate it at the points `x`, cf.
+Driscoll and Fornberg (2001) A Padé-based algorithm for overcoming the Gibbs phenomenon,
+doi: 10.1023/A:1016648530648.
 """
 function fourier_pade(x, u, degree_num, degree_den)
   N0 = length(u)