Studies composed by
Filip Jakob Peterson (or Petersen?)
(Denmark, 26.11.1924 - 11.7.1990)
At Chesscomposer.Blogspot we can read about him:
Filip Petersen was a poet and his "Brikkerne" (1985) included both poems and chess problems.
He composed direct mates, endgame studies, helpmates and retro problems.
More about him in Danisch can be found at Problemskak.dk.
(All his studies, more exact dates, possible corrections or cooks and exact details about sources can be found in the
Harold van der Heijden database V (31-12-2015) )