Close Richat and Semsiyat Domes (Mauritania): Not Astroblemes,
Dietz, R., R. Fudali, W. Cassidy, et al. (1969) (1969),
Geological Society of America Bulletin, 80, 7 p. 1367–1372,
10.1130/0016-7606(1969)80[1367:RASDMN]2.0.CO;2.