Name Info Provider Link
subscription/membership/fee required Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/MDOI-RN-05-2006-162-5-0035-3787-101019-200603001
subscription/membership/fee required Masson (France) http://www.em-consulte.com/retrieve/pii/MDOI-RN-05-2006-162-5-0035-3787-101019-200603001