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机译:Is a sudden increase of irregularity of sunspot numbers a precursor of a return to low solar activity?
Inst Phys Globe Paris, Sorbonne Paris Cite, Paris, France;
Natl Res Univ, Higher Sch Econ, Moscow, Russia;
Financial Univ, Moscow, RussiaInst Earthquake Predict Theory & Math Geophys, Moscow, Russia;
TEMPORAL-SPATIAL DISTRIBUTION; STOCHASTIC FLUCTUATIONS; PREDICTABILITY LIMIT; LYAPUNOV EXPONENTS; CHAOTIC BEHAVIOR; CYCLE; PREDICTION;