Periodic Precipitation of the Particle Flux in the Auroral Zone

Periodic Recurrent Outbursts from a 7.8s Pulsar in the SMC

Periodic returns of the earth and other planets in identical situations - Application to research for better oppositions for the planet Mars

Periodic solutions about the `out of plane' equilibrium points in the photogravitational restricted three-body problem

Periodic Solutions in the Commensurable Three-Body Problem

Periodic Solutions near a Resonant Equilibrium of a Hamiltonian System

Periodic solutions of the motion of a rigid body about the center of mass in a central Newtonian field.

Periodic solutions of the problem of a rigid body moving about the centroid in central Newtonian field

Periodic T Tauri Stars in NGC 2264: Rotation and Eclipses

Periodic variation in natural radioactivity of Lake Bouchet sediments

Periodic variations in the signal-to-noise ratios of signals received from the ICE spacecraft

Periodicities in energy dissipation rates in the auroral mesosphere/lower thermosphere

Periodicities in sunspot numbers

Periodicities in the IUE particle radiation data

Periodicities of the light curve of the semiregular variable star Y Lyncis

Periodicity and Aperiodicity in Solar Magnetic Activity

Periodicity of Eclipsing Binary Star GK Cepheus

Periodicity Search of Possible X-ray Counterparts to Radio-quiet Gamma-ray Pulsar Candidates

Periods for nineteen RR Lyrae variables in NGC 1851

Periods in the light variation of Sigma Scorpii