Records Recording of the battle Hostile_encounter are sparse , it was briefly described Statement by the chronicler Thietmar of Merseburg ( 975−1018 ) , whose father participated Participation in the battle Hostile_encounter ( `` Chronicon '' II.19 ) , and mentioned Statement by Gallus Anonymus in the 12th-century `` Gesta principum Polonorum '' .

There are three almost completely different accounts Statement of this battle Hostile_encounter : from Ramon Muntaner , Bernard Desclot , and the `` Gesta comitum Barchinonensium '' .

The `` Gesta '' places Placing the battle Hostile_encounter at Les Formigues ( or Fomigas ) , while Muntaner favoured Choosing a location off Roses to the north .