About: http://webisa.webdatacommons.org/427514092

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	At the beginning the technique was mainly focused on ionospheric determination from a single or few stations using a 2-layer tomographic approach.
http://www.w3.org/ns/prov#wasQuotedFrom	upc.edu