| Groundwater quality protection: a guide for water utilities, municipal authorities, and environment agencies S Foster, R Hirata, D Gomes, M D'Elia, M Paris Washington, DC: World Bank, 2002 | 541 | 2002 |
| Groundwater pollution risk assessment; a methodology using available data SSD Foster, RCA Hirata Groundwater pollution risk assessment; a methodology using available data, 86-86, 1988 | 498* | 1988 |
| Determinación del riesgo de contaminación de aguas subterráneas S Foster, R Hirata Una metodología basada en datos existentes. CEPIS, 1-81, 1991 | 238* | 1991 |
| The aquifer pollution vulnerability concept: aid or impediment in promoting groundwater protection? S Foster, R Hirata, B Andreo Hydrogeology Journal 21 (7), 1389, 2013 | 176 | 2013 |
| Protecao da qualidade da agua subterranea um guia para empresas de abastecimento de agua, orgaos municipais e agencias ambientais S Foster, R Hirata, D Gomes, M D'Elia, M Paris The World Bank, 2002 | 160 | 2002 |
| Determinação do risco de contaminação das águas subterrâneas: um método baseado em dados existentes SSD Foster, R Hirata Governo do Estado de Sao Paulo, 1993 | 158 | 1993 |
| Geochemical and stable isotopic evolution of the Guarani Aquifer System in the state of São Paulo, Brazil O Sracek, R Hirata Hydrogeology Journal 10, 643-655, 2002 | 153 | 2002 |
| Groundwater contamination inventory: a methodological guide A Zaporozec, JE Conrad, R Hirata, PO Johansson, JC Nonner, E Romijn, ... UNESCO: United Nations Educational, Scientific and Cultural Organisation, 2002 | 142 | 2002 |
| Origins and processes of groundwater salinization in the urban coastal aquifers of Recife (Pernambuco, Brazil): A multi-isotope approach L Cary, E Petelet-Giraud, G Bertrand, W Kloppmann, L Aquilina, V Martins, ... Science of the Total Environment 530, 411-429, 2015 | 133 | 2015 |
| Groundwater resources sustainability indicators J Vrba, J Girman, J van der Gun, N Haie, R Hirata, E Lopez-Gunn, ... Unesco 14, 114, 2007 | 122 | 2007 |
| Os aquíferos da Bacia Hidrográfica do Alto Tietê: disponibilidade hídrica e vulnerabilidade à poluição R Hirata, LMR Ferreira Revista Brasileira de Geociências 31 (1), 43-50, 2001 | 98 | 2001 |
| Impacts of urbanization on groundwater hydrodynamics and hydrochemistry of the Toluca Valley aquifer (Mexico) MA Martín del Campo, MV Esteller, JL Expósito, R Hirata Environmental Monitoring and Assessment 186, 2979-2999, 2014 | 97 | 2014 |
| Groundwater use in developing cities: policy issues arising from current trends SD Foster, R Hirata, W Ken, F Howard Hydrogeology Journal 19 (2), 271, 2011 | 92 | 2011 |
| Trends in nitrate concentrations and determination of its origin using stable isotopes (18O and 15N) in groundwater of the western Central Valley, Costa Rica J Reynolds-Vargas, J Fraile-Merino, R Hirata Ambio: A Journal of the Human Environment 35 (5), 229-236, 2006 | 86 | 2006 |
| The Guarani Aquifer System: From a Beacon of hope to a question mark in the governance of transboundary aquifers F Sindico, R Hirata, A Manganelli Journal of Hydrology: Regional Studies 20, 49-59, 2018 | 80 | 2018 |
| Natural occurrence of hexavalent chromium in a sedimentary aquifer in Urânia, State of São Paulo, Brazil C Bourotte, R Bertolo, M Almodovar, R Hirata Anais da Academia Brasileira de Ciências 81, 227-242, 2009 | 78 | 2009 |
| Recursos hídricos R Hirata Decifrando a terra, 421-444, 2000 | 78 | 2000 |
| Groundwater resources in Brazil: a review of possible impacts caused by climate change R Hirata, BP Conicelli Anais da Academia Brasileira de Ciências 84, 297-312, 2012 | 72 | 2012 |
| A revolução silenciosa das águas subterrâneas no Brasil: uma análise da importância do recurso e os riscos pela falta de saneamento R Hirata, AV Suhogusoff, SS Marcellini, PC Villar, L Marcellini | 68 | 2019 |
| Água subterrânea: reserva estratégica ou emergencial R Hirata, JLG Zoby, FR Oliveira Águas do Brasil: análises estratégicas, 2010 | 68 | 2010 |
