id	domain	url
american_scientific_journal-1752	asrjetsjournal.org	http://asrjetsjournal.org
american_scientific_journal-1752	asrjetsjournal.org	http://asrjetsjournal.org
american_scientific_journal-1752	www.sciencedirect.com	http://www.sciencedirect.com/science/article/pii/s0742051x15000761#bib7
american_scientific_journal-1752	www.sciencedirect.com	http://www.sciencedirect.com/science/article/pii/s0742051x15000761#bib7
american_scientific_journal-1752	www.aau.org	www.aau.org
american_scientific_journal-1752	www.aau.org	www.aau.org
american_scientific_journal-1752	www.aau.org	http://www.aau.org
american_scientific_journal-1752	www.aau.org	http://www.aau.org
american_scientific_journal-1752	ageconsearch.umn.edu	http://ageconsearch.umn.edu/bitstream/98851/2/chiputwa_etal_saea_paper.pdf
american_scientific_journal-1752	ageconsearch.umn.edu	http://ageconsearch.umn.edu/bitstream/98851/2/chiputwa_etal_saea_paper.pdf
american_scientific_journal-1752	en.wikipedia.org	http://en.wikipedia.org/wiki/snowball_sampling
american_scientific_journal-1752	en.wikipedia.org	http://en.wikipedia.org/wiki/snowball_sampling
american_scientific_journal-1752	www.sciencedirect.com	http://www.sciencedirect.com/science/journal/0742051x
american_scientific_journal-1752	www.sciencedirect.com	http://www.sciencedirect.com/science/journal/0742051x/50/supp/c