id	domain	url
stem-771	hdl.handle.net	http://hdl.handle.net
stem-771	hdl.handle.net	http://hdl.handle.net/10603/22737
stem-771	hdl.handle.net	http://hdl.handle.net/10603
stem-771	www.sciencedirect.com	http://www.sciencedirect.com
stem-771	www.researchgate.net	http://www.researchgate.net
stem-771	hdl.handle.net	http://hdl.handle.net/%2010603/286327
stem-771	hdl.handle.net	http://hdl.handle.net/%2010603/286327
stem-771	hdl.handle.net	http://hdl.handle.net/10603/22737
stem-771	hdl.handle.net	http://hdl.handle.net/10603/%20103367
stem-771	www.sciencedirect.com	http://www.sciencedirect.com
stem-771	www.researchgate.net	http://www.researchgate.net