1. MISCELLANEOUS GEOLOGICAL INVESTIGATIONS 1958
2. Physics of Blown Sand and Desert Dunes 1941
3. BARCLAY, W.S., GEOGRAPH J 49: 53 (1917).
4. A Visit to Jebel Shammar (Nedji);PROCEEDINGS OF THE ROYAL GEOGRAPHICAL SOCIETY,1880
5. La morphologie de l'erg occidental;TRAVAUX DE L'INSTITUT DE RECHERCHES SAHARIENNES,1943