H Abbaspour,
R L Cohen, K Gruher, String topology of
Poincaré duality groups, from: "Proceedings of the
conference on groups, homotopy and configuration spaces"
(editor N Iwase et al), Geom. Topol. Monogr. 13, Geom. Topol.
Publ. (2008) 1
2
J F Adams,
Infinite loop spaces, Annals of Math. Studies 90,
Princeton Univ. Press (1978) MR505692
3
A Adem, J
Leida, Y Ruan, Orbifolds and stringy
topology, Cambridge Tracts in Math. 171, Cambridge Univ.
Press (2007) MR2359514
4
A Adem, Y Ruan,
Twisted orbifold $K$–theory, Comm. Math. Phys. 237
(2003) 533 MR1993337
R L Cohen, V
Godin, A polarized view of string topology, from:
"Topology, geometry and quantum field theory", London Math.
Soc. Lecture Note Ser. 308, Cambridge Univ. Press (2004) 127
MR2079373
R L Cohen,
J D S Jones, J Yan, The loop
homology algebra of spheres and projective spaces, from:
"Categorical decomposition techniques in algebraic topology
(Isle of Skye, 2001)", Progr. Math. 215, Birkhäuser (2004) 77
MR2039760
11
R L Cohen,
A A Voronov, Notes on string topology, from:
"String topology and cyclic homology", Adv. Courses Math. CRM
Barcelona, Birkhäuser (2006) 1 MR2240287
E Lupercio, B
Uribe, Loop groupoids, gerbes, and twisted sectors on
orbifolds, from: "Orbifolds in mathematics and physics
(Madison, WI, 2001)", Contemp. Math. 310, Amer. Math. Soc.
(2002) 163 MR1950946
I Moerdijk,
Orbifolds as groupoids: an introduction, from:
"Orbifolds in mathematics and physics (Madison, WI, 2001)",
Contemp. Math. 310, Amer. Math. Soc. (2002) 205 MR1950948
A A Voronov,
Notes on universal algebra, from: "Graphs and patterns
in mathematics and theoretical physics", Proc. Sympos. Pure
Math. 73, Amer. Math. Soc. (2005) 81 MR2131012