Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 31 references without a DOI — listed, not checked
no DOI — not checkedref1
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no DOI — not checkedSituaci�n Automotriz Colombia
no DOI — not checkedref7
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no DOI — not checkedEnfoques de m�todos mixtos en la investigaci�n en ciencia de familia
no DOI — not checkedEncuesta Nacional de Calidad de Vida-ECV 2019
no DOI — not checkedref13
no DOI — not checkedref14
no DOI — not checkedEvolution of air quality in Santiago: The role of mobility and lessons from the science-policy interface
no DOI — not checkedref16
no DOI — not checkedAmbient PM 2.5 in Latin American cities: Population exposure, trends, associated urban factors, and effects on mortality
no DOI — not checked�Qu� es la movilidad? Elementos para (re) construir las definiciones b�sicas del campo del transporte
no DOI — not checkedref20
no DOI — not checkedref21
no DOI — not checkedOrganizaci�n institucional del transporte metropolitano en Am�rica Latina: 3 casos de estudio
no DOI — not checkedParque Automotor Activo e Inactivo
no DOI — not checkedref26
no DOI — not checkedref27
no DOI — not checkedChanges in air quality associated with mobility trends and meteorological conditions during COVID-19 lockdown in Northern England
no DOI — not checkedInternational Organization of Motor Vehicle Manufacturers
no DOI — not checkedPreventing disease through healthy environments A global assessment of the burden of disease from environmental risks
no DOI — not checkedAjuste de curvas mediante m�todos no param�tricos para estudiar el comportamiento de contaminaci�n del aire por material particulado PM 10
no DOI — not checkedref32
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no DOI — not checkedref39
no DOI — not checkedThe relationships between PM 2.5 and meteorological factors in China: Seasonal and regional variations
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