EL-HADI, Z. A. ;MOSTAFA , A. G. ;MOUSTAFFA, F. A. ;KHALIFA, F. A.2019-04-222019-04-221303-6017http://hdl.handle.net/20.500.12575/61905https://doi.org/10.1501/Commub_0000000443Paramagnetic properties of the divalent nickel ions in some alkali borate glasses067073