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9. Ricci soliton homogeneous nilmanifolds, Mathematische Annalen 319 (2001), 715-733.
8. The variety of Lie algebras from certain riemannian viewpoint, Contemporary Mathematics 288 (2001), 363-370.
7. Gelfand pairs attached to representations of compact Lie groups, Transformation Groups 5 (2000) 307-324.
6. Homogeneous nilmanifolds attached to representations of compact Lie groups, Manuscripta Mathematica 99 (1999), 287-309.
5. Naturally reductive homogeneous structures on 2-step nilpotent Lie groups, Revista de la UMA 41 no. 2 (1998), 15-23.
4. Curvature properties of solvable extensions of H-type groups, with Isabel Dotti, Rendiconti di Matematica, Serie VII, Volume 18, Roma (1998), 167-179.
3. Modified H-type groups and symmetric-like Riemannian spaces, Differential Geometry and its Applications 10 (1999), 121-143.
2. Commutative spaces which are not weakly symmetric, Bulletin of the London Mathematical Society 30 (1998), 29-36.
1. Homogeneous nilmanifolds of dimension 3 and 4, Geometriae Dedicata 68 (1997), 145-155.