@article{ERAAMS_2007_13_a7,
     author = {Guan, Daniel},
     title = {Modification and the cohomology groups of compact solvmanifolds},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {74--81},
     publisher = {mathdoc},
     volume = {13},
     year = {2007},
     doi = {10.1090/S1079-6762-07-00176-X},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-07-00176-X/}
}