Kneser Milnor decomposition in higher dimensions

Is there any sort of Kneser Milnor decomposition in dimension d larger than or equal to 4?, I mean a family of d-1 dimensional spheres disconnecting the d-dimensional manifold into irreducible components and with some uniqueness?, If so, any reference so far?. Thanks.

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This is the topic of a previous MO question: mathoverflow.net/questions/93512/… In short, oriented manifolds up to diffeo with connect sum operation certainly is not a free commutative monoid in high dimensions since you have torsion elements -- homotopy spheres. But there are many things known about this commutative monoid. –  Ryan Budney Jul 4 '12 at 18:27

The first paper gives various counterexamples to the "naive" guess for 4-dimensional Kneser's conjecture: that a free product decomposition of the fundamental group would lead to a connected sum decomposition. The second paper gives a proof of this "naive" prime decomposition theorem (including uniqueness) stably, i.e. up to a connected sum with copies of $S^2\times S^2$. (The existence of such a stable decomposition is also proved by Jonathan Hillman, "Free products and 4-dimensional connected sums" Bull. London Math. Soc. 27 (1995), 387–391.)