57 citations · 58 across the 3 of their papers we have counts for
3 papers
astro-ph.CO2010★ 57 cited
On the Spiral Structure of the Milky Way Galaxy
Yuri N. Efremov
We consider the possible pattern of the overall spiral structure of the Galaxy, using data on the distribution of neutral (atomic), molecular, and ionized hydrogen, on the base of…
astro-ph2005
Complexes of clusters and complexes of stars
Yu. N. Efremov
Most star complexes are in fact complexes of stars, clusters and gas clouds; term "star complexes" was introduced as general one disregarding the preferential content of a complex.…
astro-ph2002★ 1 cited
On the Origin of the Circular and Hexagonal Formations in Galaxies
Yuri N. Efremov
The round and arc-shaped formations are known in some galaxies, the Bubble complex (the Hodge object) in NGC 6946 being the most remarkable. The rim of the complex has a form of a…