On 2-framed Riemannian manifolds with Godbillon-Vey structure form.
On a class of exact locally conformal cosymplectic manifolds.
On para-Kählerian manifolds and on skew symmetric Killing vector fields carried by .
On a class of even-dimensional manifolds structured by an affine connection.
Contact transformation of a presymplectic form with quasi-Sasakian structure.
Sur les variétés lorentziennes munies d'une connexion principale
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