\documentclass[12pt]{beamer}
\usepackage{pgf,pgfnodes,pgfautomata,pgfheaps}

\catcode`\@=11

\def\detailedframenumbering{{$\number\c@framenumber_{[
\ifnum\beamer@slideinframe=\beamer@minimum
\number\beamer@slideinframe\else\advance\beamer@slideinframe by -1{}
\number\beamer@slideinframe\advance\beamer@slideinframe by 1{}\fi]}$/\inserttotalframenumber}}

\newcount \c@refinit 
\def\biblioframenumbering{Ref.~\advance\c@page by -\c@refinit \number\c@page
\advance\c@page by \c@refinit}
\def\setbibliopages{\c@refinit=\c@page \advance \c@refinit by -1{}
\let\framenumbering=\biblioframenumbering}

\catcode`\@=12

\input{stockholm.tex}