Examples of non-formal closed -connected manifolds of dimensions and more
arXiv:math/0306299
Abstract
We construct closed -connected manifolds of dimensions that possess non-trivial rational Massey triple products. We also construct examples of manifolds such that all the cup-products of elements of vanish, while the group $H^{3k-1}(M;\Q)$ is generated by Massey products: such examples are useful for theory of systols.
Latex, 4 pages, minor changes in extended version