@article{01656137, title = {<title-group xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><article-title xml:lang="en"><math><mi>a</mi></math>-minimal sets and related topics in transformation semigroups. I.</article-title></title-group>}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {25}, year = {2001}, pages = {637-654}, doi = {10.1155/S016117120100388X}, zbl = {0983.54040}, language = {en}, url = {http://dml.mathdoc.fr/item/01656137} }
Sabbaghan, Masoud; Shirazi, Fatemah Ayatollah Zadeh.. International Journal of Mathematics and Mathematical Sciences, Tome 25 (2001) pp. 637-654. doi : 10.1155/S016117120100388X. http://gdmltest.u-ga.fr/item/01656137/ -minimal sets and related topics in transformation semigroups. I.