@article{SeppTempelGramannetal.2011,
  author    = {T. Sepp and E. Tempel and M. Gramann and P. Nurmi and Michael Haupt},
  title     = {Studying the patterns of the universe},
  journal   = {Baltic astronomy},
  volume    = {20},
  number    = {2},
  pages     = {309 -- 312},
  year      = {2011},
}