Analysis of information sources in references of the Wikipedia article "Petr Trapp" in English language version.
Po přestávce trenér Michal Bílek třikrát střídal a na hřišti se ocitl po Vackovi a Trappovi třetí debutant Václav Pilař[After the break, coach Michal Bílek made three substitutions, with the third debutant Václav Pilař having found himself on the field after Vacek and Trapp.]
