Why do some Ovid citations have no SFX option?
Some Ovid citations will not display any OpenLink(SFX) option. This is because some citations do not have all the elements Ovid requires in creating an OpenURL. This has been found in citations to supplements and some selectively indexed articles. The absence of an OpenLink(SFX) option does NOT necessarily mean that no full text or print is available for the citation. This problem has been reported to Ovid and we have requested that they change the requirements for generating an OpenURL.