{{Cite conference| pages = 26| last1 = Andrieux| first1 = Jean-Yves| last2 = Brulé| first2 = Anne| last3 = Herbaut| first3 = Claudie| last4 = Larcher| first4 = Guy| last5 = Plaine| first5 = Jean| title = Sondage d'un bas fourneau et des ses structures annexes - Le Perray en Plélan-le-Grand| date = 1989}}