XX model on the circle

XX Ophiuchi

XX Ophiuchi in Deep Minimum after 37 Years

XX Pyxidis: the Mummy returns

XX Virgins an RR Lyrae-type variable with interesting period

XX. CoRoT-20b: A very high density, high eccentricity transiting giant planet

XXIInd National Australian Convention of Amateur Astronomers

XXIInd National Australian Convention of Amateur Astronomers

XXIV IAU General Assembly, IAU Symposium S202 ``Planetary Systems in the Universe''

XXIVth International Symposium on Lattice Field Theory

XXL - An overview of the ultimate XMM extragalactic survey

XXM-Newton Observations of Compact Stars

XXth General Assembly of the IAU in Baltimore.

XXVII International Workshop on High Energy Physics and Field Theory

XXX Spin Chain: from Bethe Solution to Open Problems

XXXIX congress of the International Astronautical Federation held in Bangalore (India), 1988, October.

XXXVIIiéme Rencontres de Moriond: Electroweak 2002 Conference Summary

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XXZ and Ising Spins on the Triangular Kagome Lattice

XXZ Bethe states as highest weight vectors of the $sl_2$ loop algebra at roots of unity