Questions about material parametes"young" and poisson

Created by Henry on on 2013-02-20
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Dear all,
         According to the document of Yade, the material parameters of "young" and "poisson" :
         young: elastic modulus [Pa]. It has different meanings depending on the Ip functor.
        poisson:Poisson’s ratio or the ratio between shear and normal stiffness [-]. It has different meanings
depending on the Ip functor.

       And, when young means Kn? and when poisson means the ratio between shear and normal stiffness ?
       such as I'm using the ‘CohFrictMat’ the "young" is "Kn"? and "poisson" is "Ks/Kn"?
       Thanks a lot!
Henry