how to cite this article: ashrafzadeh f, sadrnabavi a, akhondian j, beiraghi toosi m, mohammadi mh, hassanpour k. angelman syndrome: a case report. iran j child neurol. spring 2016; 10(2):86-89. abstract objective angelman syndrome (as) is a neurodevelopmental disorder presented by jerky movement, speech delay and cognitive disability epilepsy as well as dysmorphic features. it occurs due to an...

Have you ever thought about the alphanumeric link often at end of a reference? What is purpose this, and why it now required with references to journal articles in most reference styles? That called digital object identifier, or DOI, may be important part for discovering, managing, linking scholarly content objects. The DOI unique string assigned other that exist wholly partially form. DOIs act...