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Rotation of active regions and coronal holes from observations of the Sun in the line He I λ 1083 nm. Kosm. nauka tehnol. 2004 ;10(5-6):138-140.
. Temporal variations of differential rotation of active regions and coronal holes and their relationship with solar activity level. Kosm. nauka tehnol. 2008 ;14(6):018-038.
. Differential rotation of solar structural formations from observations in the He I λ 1083 nm line. Kosm. nauka tehnol. 2009 ;15(1):44-56.
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