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Ballester  M. y  C. González (1997b): Relación entre la actividad solar y la ciclogénesis tropical en el Atlántico Norte. Boletín de la Sociedad Meteorológica de Cuba. Vol.3, No.1

Ballester M., C. González y R. Pérez  (2000): Caribbean Sea tropical cyclone variations and tendencies. 24^th Conference on hurricanes and tropical meteorology. 29 May – 2 June. Fort Lauderdale, Florida. P. 191 – 192.

Bruce, J. P. (1990): La Atmósfera de la Tierra. Planeta viviente. Organización Meteorológica Mundial. Ginebra, OMM  No. 735, 47 pp.

Goldenberg, S.B., L.J. Shapiro and Ch.W. Landsea (1998): Are we Entering an Active Era for Major Hurricane Activity? Memorias. Conferencia Científica sobre Ciclones Tropicales “Rodríguez Ramírez” in Memoriam. 7 – 9 mayo. C. Habana. p.24 – 29.

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Gray, W.M., C.W. Landsea and J.D. Sheaffer (1992): Long Period Variations in African Rainfall and Hurricane Related Destruction Along the US East Coast. 14^th Annual National Hurricane Conference. April 10, Norfolk, VA. 36 pp.

Gray, W.M., C.W. Landsea, P.W. Mielke, Jr. and K.J. Berry. (2000): Early April forecast of Atlantic Hurricane activity and US landfall strike probabilities for 2000. http://tropical.atmos.colostate.edu/forecasts/index.html

Gray, W.M., J.A.  Knaff, C.W.  Landsea, P.W. Mielke, Jr. and K.J. Berry (1997): Early April forecast of Atlantic Basin Seasonal Hurricane activity for 1997. http://tropical.atmos.colostate.edu/forecasts/index.html

Landsea, Ch.W., W.M. Gray, P.W. Mielke, Jr., and K.J. Berry  (1992): Long - term variations of Western Sahelian monsoon rainfall and intense U.S. landfalling hurricanes.  J. Climate.  5, p. 1528 – 1534.

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SIDC- RWC Brussels (2000): Sunspot Index Data Center. http://sidc.oma.be/

Sneyers, R. (1990): Technical Note No.143 on the Statistical Analysis of Series of Observations. WMO.  No.415, 189 pp.

Sneyers, R. (1992): On the use of statistical analysis for the objective determination of climate change. Meteorol. Zeitschrift, N.F. 1, p. 247 – 256.

Vitinsky I.I. (1973): Ciclicidad y pronóstico de la actividad solar (en ruso). Nauka. 257 pp.