@article{10_1007_s10492_008_0033_x,
     author = {H\"omberg, Dietmar and Krej\v{c}{\'\i}, Pavel},
     title = {J\"urgen {Sprekels} turns sixty},
     journal = {Applications of Mathematics},
     pages = {405--407},
     publisher = {mathdoc},
     volume = {53},
     number = {5},
     year = {2008},
     doi = {10.1007/s10492-008-0033-x},
     mrnumber = {2469584},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10492-008-0033-x/}
}