+
+@Article{fornberg88,
+ author = "Bengt Fornberg",
+ title = "Generation of finite difference formulas on
+ arbitrarily spaced grids",
+ journal = "Math. Comp.",
+ volume = "51",
+ number = "",
+ pages = "699--706",
+ year = "1988",
+ doi = "http://dx.doi.org/10.1090/S0025-5718-1988-0935077-",
+ URL = "http://dx.doi.org/10.1090/S0025-5718-1988-0935077-",
+}
+
+@Article{fornberg94,
+ author = "Bengt Fornberg and David M. Sloan",
+ title = "A review of pseudospectral methods for solving partial
+ differential equations",
+ journal = "Acta Numerica",
+ volume = "3",
+ number = "",
+ pages = "203--267",
+ year = "1994",
+ doi = "10.1017/S0962492900002440",
+ URL = "http://dx.doi.org/10.1017/S0962492900002440",
+}