Suojoki at Keuruu : a mid 14th-century site of the wilderness culture in the light of settlement historical processes in Central Finland / J.-P Taavitsainen, Janne Vilkuna & Henry Forssell. - Taavitsainen, J.-P (Suomalaisen Tiedeakatemian Toimituksia. Sarja Humaniora, 2007)