I am looking for a reference or short explanation of a proof by E. Brieskorn.


In his famous work "Singularities of complex hypersurfaces" Milnor proves that the (nowadays called) Milnor Number (in the sense of the local degree) of a polynomial $f\in\mathbb{C}{[X\_1,X\_2,...,X\_{n+1}]}$ with an isolated singular point at the origin coincides with the $n$-th Betti number of the fibers of the corresponding Milnor fibration.


Himself remarks that Brieskorn "[...] has recently given a simple proof[...]" of this Theorem "[...] which is quite different from the one [...]" he presents and I'm looking exactly for this Proof. Milnor might mean Brieskorn's dissertation as I was told, but I do not have any access to this work. So I wonder if someone else published an at least related version of this proof.


Is it about perturbing the singularity to non-degenerate singularities?



Brieskorn's proof of a theorem by Milnor about  the Milnor number
I guess that in his book (1968) Milnor refers to the proof later published in Brieskorn's paper 


"Die Monodromie der Isolierten Singularitäten von Hyperflächen", Manuscripta Mathematica 2, 103-161 (1970).


See in particular Satz 1. 
In fact, at the beginning of the Appendix Brieskorn writes



> 
> "Wir haben in Satz 1 bewiesen, dass der Rang der relativen de Ramschen Cohomologie einer isolierten Singularität von $f$ in $x$ gleich $b\_{f, x}$ ist."
> 
> 
> 


This paper is freely available on [EMANI.ORG](http://gdz.sub.uni-goettingen.de/dms/load/toc/?PPN=PPN365956996)


