Preprints
- The sharp lower bound of the first eigenvalue of the sub-Laplacian on a quaternionic contact manifold ,
(with Alexander Petkov and Dimiter Vassilev),
arXiv:arXiv:1112.0779.
- The optimal constant in the $L^2$ Folland-Stein inequality on the quaternionic Heisenberg group,
(with I. Minchev and D. Vassilev),
arXiv:arXiv:1009.2978.
- Quaternionic Kaehler and Spin(7) metrics arising from quaternionic contact Einstein structures,
(with L. C. de Andres, M. Fernandez, J. A. Santisteban,
L. Ugarte and D. Vassilev),
arXiv:arXiv:1009.2745.
- Explicit Quaternionic Contact Structures and Metrics with Special Holonomy,
(with L. C. de Andres, M. Fernandez, J. A. Santisteban,
L. Ugarte and D. Vassilev),
arXiv:0903.1398.
- Quaternionic contact Einstein structures and
quaternionic contact Yamabe problem,
(with I. Minchev and D. Vassilev),
math.DG/0611658,
ICTP Preprint: IC/2006/117.
- Twistors of Almost Quaternionic Manifolds, (with I. Minchev and S. Zamkovoy),
math.DG/0511525.
- Complex product structures on some simple Lie groups, (with V. Tsanov),
math.DG/0405584.