id	domain	url
cet-12882	www.cetjournal.it	www.cetjournal.it
cet-12882	doi.org	https://doi.org/10.18359/rfcb.1303
cet-12882	doi.org	https://doi.org/10.1515/revce-2016-0032
cet-12882	doi.org	https://doi.org/10.3103/s1063455x08050093
cet-12882	doi.org	https://doi.org/10.1016/j.ultsonch.2004.03.007
cet-12882	doi.org	https://doi.org/10.1016/j.ultsonch.2015.10.010
cet-12882	www.sciencedirect.com	https://www.sciencedirect.com/science/article/pii/s0011916409005803
cet-12882	accedacris.ulpgc.es	https://accedacris.ulpgc.es/bitstream/10553/11899/4/0699295_00000_0000.pdf