@article{paperid:1050375,
author = {M. Mosadeq and M. Hassani and Niknam, Asadollah},
title = {Closability of Module σ−Derivatoins},
journal = {Journal of Mathematical Extension},
year = {2012},
volume = {6},
number = {1},
month = {January},
issn = {1735-8299},
pages = {57--69},
			numpages = {12},
keywords = {Derivation; deficiency indices; relative boundedness; simple module; torsion-free module; essential ideal;
Hilbert C*− module.},
}