Homology of non-$k$-overlapping discs
  In this paper we describe the homology and cohomology of some natural bimodules over the little discs operad, whose components are configurations of non-$k$-overlapping discs. At the end we briefly explain how this algebraic structure intervenes in the study of spaces of non-$k$-equal immersions. 
Natalia Dobrinskaya, Victor Tourtchine
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