Is there a way to get the DOI (Document Object Identifier) of a research paper when its title is available?
I am preparing a reference database I could not get the URL of all the references. So, I tried to search online but could not get to anything. I will appreciate if anyone uses such tool/website or has any idea.
EDIT I am sorry but my problem is little bigger. I need to automatically (not manually) get them from the websites. Of course, I do not want to do it for more than 50 papers if that is legal/allowed.
R package fulltext allows you to search DOI's given a title:
library(fulltext) res1 <- ft_search(query = "Estimating Summer Nutrient Concentrations in Northeastern Lakes from SPARROW", from = "plos") res1 <- ft_links(res1) res1$plos$ids
 "10.1371/journal.pone.0081457" "10.1371/journal.pone.0030492" "10.1371/journal.pone.0049220"