PERHO. 1:100000.PIPPING F.1976; SUOMEN GEOL. KARTTA, KALLIOPERAEHARTTA; SUOMI; DA. 1976; NO 2332; PP. 1; 1 CART.; MEME DOC. ANGL.Serial Issue

LA ZAMBIE SOUS L'ANGLE VISUEL DU GEOLOGUE.PIPPING F.1969; GEOLOGI; FIN; 1969(12), VOL. 21, NUM. 0010, P. 169 A 170Miscellaneous

Deep drilling within the Lappajärvi Meteorite impact craterPIPPING, F.1989, Num 10, pp 9-10, issn 0782-8535Article

Lappajärvi impact crater : Drilling continuedPIPPING, F.1991, Num 12, pp 33-36, issn 0782-8535Article

KyyjärviPIPPING, F; VAARMA, M.1993, Num 2331, 1 carteSerial Issue

EvijärviPIPPING, F; VAARMA, M.1992, Num 2314, 1 carte coulSerial Issue

Geology, stratigraphy and structure of the Lappajärvi meteorite crater, western Finland : preliminary results of deep drillingPIPPING, F; LEHTINEN, M.Tectonophysics. 1992, Vol 216, Num 1-2, pp 91-97, issn 0040-1951Conference Paper