@inbook{35c44edf045246f5b107943dcd3cef50,
title = "Positive Sasakian structures on 5-manifolds",
abstract = "The aim of this paper is to study 5-manifolds that carry a positive Sasakian structure. Strong restrictions are derived for the integral hemology groups. In some cases, all positive sasakian structures are classified. A key step is the study of log Del Pezzo surfaces whose boundary divisor contains positive genus curves.",
author = "J{\'a}nos Koll{\'a}r",
note = "Funding Information: Acknowledgments I thank Ch. Boyer and K. Galicki for many comments and corrections and the University of Utah where some of this work was done. Partial financial support was provided by the NSF under grant number DMS-0500198. Publisher Copyright: {\textcopyright} 2009, Birkh{\"a}user Boston, a part of Springer Science+Business Media LLC.",
year = "2009",
doi = "10.1007/978-0-8176-4743-8_5",
language = "English (US)",
series = "Progress in Mathematics",
publisher = "Springer Basel",
pages = "93--117",
booktitle = "Progress in Mathematics",
}