@book {61966,
	title = {Risque naturels li{\'e}e au ph{\'e}nom{\`e}ne retrait-gonflement des sols \&laquo; Cas de Djerma-Batna \&raquo;},
	year = {2005},
	month = {2005},
	author = {Fouad, DJAIZ and A, BOUMEZBEUR and Ramdane, Marmi}
}
