public.econ.duke.edupublic.econ.duke.edu/~boller/Econ.883/Enders.pdf · than a linear, fashion....
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public.econ.duke.edupublic.econ.duke.edu/~boller/Econ.883/Enders.pdf · than a linear, fashion. Experimenting with vanous multiplicative seasonal coef- ficients might be a way to