Geodesic
The cubic differential system with six real invariant straight lines along three directions
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 2 (2009), pp. 111-130.

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We classify all cubic systems possessing exactly six real invariant straight lines along three directions taking into account their degree of invariance. We prove that there are 6 affine different classes of such systems. For every class we carried out the qualitative investigation in the Poincaré disc. 
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V. Puţuntică; A. Şubă. The cubic differential system with six real invariant straight lines along three directions. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 2 (2009), pp. 111-130. https://geodesic-test.mathdoc.fr/item/BASM_2009_2_a7/

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