Also it seems impossible to find a direct link to the paper. Here: https://halshs.archives-ouvertes.fr/halshs-01541602/document https://halshs.archives-ouvertes

Also it seems impossible to find a direct link to the paper. Here: https://halshs.archives-ouvertes.fr/halshs-01541602/document https://halshs.archives-ouvertes.fr/halshs-01541602/document