Babu, Konda Ramesh; Eeshwaraiah, Begari; Aravind, Dachepally; Meshram, Harshadas M.; Raju, Rallabaldi Madhusudan; Bhattacharya, Apurba; Bandichhor, Rakeshwar Monatshefte fur Chemie, 2008 , vol. 139, # 2 p. 179 - 181