#### Volume 7, issue 4 (2007)

 1 C Balteanu, Z Fiedorowicz, R Schwänzl, R Vogt, Iterated monoidal categories, Adv. Math. 176 (2003) 277 MR1982884 2 M Basterra, M Mandell, The multiplication on $MU$ and $BP$, to appear 3 C Berger, Combinatorial models for real configuration spaces and $E_n$–operads, from: "Operads: Proceedings of Renaissance Conferences (Hartford, CT/Luminy, 1995)" (editors J L Loday, J D Stasheff, A A Voronov), Contemp. Math. 202, Amer. Math. Soc. (1997) 37 MR1436916 4 J M Boardman, R M Vogt, Homotopy-everything $H$–spaces, Bull. Amer. Math. Soc. 74 (1968) 1117 MR0236922 5 J M Boardman, R M Vogt, Homotopy invariant algebraic structures on topological spaces, Lecture Notes in Mathematics 347, Springer (1973) MR0420609 6 J M Boardman, R M Vogt, Tensor products of theories, application to infinite loop spaces, J. Pure Appl. Algebra 14 (1979) 117 MR524181 7 A Dold, Die Homotopieerweiterungseigenschaft $(=\mathrm{HEP})$ ist eine lokale Eigenschaft, Invent. Math. 6 (1968) 185 MR0246292 8 A D Elmendorf, I Kriz, M A Mandell, J P May, Rings, modules, and algebras in stable homotopy theory, Mathematical Surveys and Monographs 47, American Mathematical Society (1997) MR1417719 9 Z Fiedorowicz, Constructions of $E_n$ Operads, from: "Proceedings of the Workshop on Operads" (1999) 34 10 M Kontsevich, Operads and motives in deformation quantization, Lett. Math. Phys. 48 (1999) 35 MR1718044 11 M Kontsevich, Y Soibelman, Deformations of algebras over operads and the Deligne conjecture, from: "Conférence Moshé Flato 1999, Vol. I (Dijon)", Math. Phys. Stud. 21, Kluwer Acad. Publ. (2000) 255 MR1805894 12 J Lillig, A union theorem for cofibrations, Arch. Math. $($Basel$)$ 24 (1973) 410 MR0334193 13 J McClure, R Schwänzl, R Vogt, $\mathrm{THH}(R)\cong R\otimes S^1$ for $E_{\infty}$ ring spectra, J. Pure Appl. Algebra 121 (1997) 137 MR1473888 14 J E McClure, J H Smith, A solution of Deligne's Hochschild cohomology conjecture, from: "Recent progress in homotopy theory (Baltimore, MD, 2000)", Contemp. Math. 293, Amer. Math. Soc. (2002) 153 MR1890736 15 D E Tamarkin, Another proof of M. Kontsevich formality theorem arXiv:math.QA/9803025 16 D E Tamarkin, Formality of chain operad of little discs, Lett. Math. Phys. 66 (2003) 65 MR2064592 17 R M Vogt, Convenient categories of topological spaces for homotopy theory, Arch. Math. $($Basel$)$ 22 (1971) 545 MR0300277 18 R M Vogt, Cofibrant operads and universal $E_{\infty}$ operads, Topology Appl. 133 (2003) 69 MR1996461 19 A A Voronov, Homotopy Gerstenhaber algebras, from: "Conférence Moshé Flato 1999, Vol. II (Dijon)", Math. Phys. Stud. 22, Kluwer Acad. Publ. (2000) 307 MR1805923