Figure 2.
Distribution of research articles associated to the different phosphorus allotropes in the decade 2008–2017. Source: Scopus.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.