id	domain	url
fumecheng-2590	doi.org	https://doi.org/10.22190/fume170206029m
fumecheng-2590	www.google.rs	https://www.google.rs/search?espv=2&biw=1517&bih=735&site=webhp&q=at+approximately&spell=1&sa=x&ved=0ahukewje_zhb24fsahvezrqkhanodtsqvwuifsga