Universal unfolding of a singularity of a symmetric vector field with 7-jet C∞-equivalent to y ∂/∂x+(±x3 ±x6y) ∂/∂y
1990 ◽
pp. 334-355
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Vestnik of Volga State University of Technology Ser Radio Engineering and Infocommunication Systems
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2016 ◽
Vol 31
(3)
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pp. 45-52
2018 ◽
pp. 1-14
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2021 ◽
Vol 60
(6)
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