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Natural and artificial variations in the natality in Slovakia
Střeštík, Jaroslav ; Mikulecký, M. ; Žirko, M.
Daily numbers of births in Slovakia 1996-2001 were taken into calculations. In the annual variation a trough occurs from October to December, and short sharp minima during holidays. In the spectrum only annual and 7-day period supplemented by their higher harmonics can be found. No trace of lunar variation has been bound.

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