Vespe, FrancescoFrancescoVespePacione, RRPacione2020-09-172020-09-172009-01-01https://hdl.handle.net/20.500.13025/3144Estimating zenith tropospheric delays (ZTD) by data coming from groundArticle Journalhttp://adsabs.harvard.edu/abs/2009EGUGA..1114062V54dcce0c8580fe1368eeb3f7