Axisymmetric structure of the planetary nebulae He2-437, M1-92
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Planetary Nebulas – Views from Whitby Observatory
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2MASS Atlas Image Gallery
This planetary nebula has 2 ultra-close stars at its heart, Space
Constrained Inverse Volume Rendering for Planetary Nebulae
Reconstruction and Visualization of Planetary Nebulae
Axisymmetric emission density maps for the planetary nebulae He2-437
Reconstruction and Visualization of Planetary Nebulae
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Small-scale structures in planetary nebulae
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File:Planetary Nebula M2-9.jpg - Wikipedia
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