@article{02010106, title = {Relationships between usual and approximate inverse systems.}, journal = {Matematichki Vesnik}, volume = {52}, year = {2000}, pages = {83-97}, zbl = {1031.54006}, language = {en}, url = {http://dml.mathdoc.fr/item/02010106} }
Lončar, Ivan. Relationships between usual and approximate inverse systems.. Matematichki Vesnik, Tome 52 (2000) pp. 83-97. http://gdmltest.u-ga.fr/item/02010106/