  This study proposes a methodology using OpenAlex (OA) for tracking Open
Access publications in the case of Argentina, a country where a self-archiving
mandate has been in effect since 2013 ( Law 26.899, 2013). A sample of 167,240
papers by researchers from the National Council for Scientific and Technical
Research (CONICET) was created and analyzed using statistical techniques. We
estimate that OA is able to capture between 85-93% of authors for all
disciplines, with the exception of Social Sciences and Humanities, where it
only reaches an estimated 47%. The availability of papers in Open Access was
calculated to be 41% for the period 1953-2021 and 46% when considering
exclusively the post-law period (2014-2021). In both periods, gold Open Access
made up the most common route. When comparing equal periods post and pre-law,
we observed that the upward trend of gold Open Access was pre-existing to the
legislation and the availability of closed articles in repositories increased
by 5% to what is estimated based on existing trends. However, while the green
route has had a positive evolution, it has been the publication in gold
journals that has boosted access to Argentine production more rapidly. We
concluded that the OA-based methodology, piloted here for the first time, is
viable for tracking Open Access in Argentina since it yields percentages
similar to other national and international studies.
  En este estudio se propone una metodolog\'ia utilizando OpenAlex (OA) para
monitorear el acceso abierto (AA) a las publicaciones cient\'ificas para el
caso de Argentina, pa\'is donde rige el mandato de autoarchivo -Ley 26.899
(2013)-. Se conform\'o una muestra con 167.240 art\'iculos de investigadores
del Consejo Nacional de Investigaciones Cient\'ificas y T\'ecnicas (CONICET)
que se analizaron con t\'ecnicas estad\'isticas. Se estim\'o que OA puede
representar entre 85-93% de los autores para todas las disciplinas, excepto
Ciencias Sociales y Humanidades, donde solo alcanza al 47%. Se calcul\'o que
41% de los art\'iculos publicados entre 1953-2021 incluidos en la fuente
est\'an en AA, porcentaje que sube a 46% al considerar exclusivamente el
periodo post ley (2014-2021). En ambos periodos es la v\'ia dorada la que
representa mayor proporci\'on. Al comparar periodos iguales post y pre ley, se
observ\'o que la tendencia en alza de la v\'ia dorada era preexistente a la
legislaci\'on y la disponibilidad de art\'iculos cerrados en repositorios
aument\'o un 5% a lo que se estima en base a tendencias existentes. Se concluye
que si bien la v\'ia verde ha tenido una evoluci\'on positiva, ha sido la
publicaci\'on en revistas doradas lo que ha impulsado m\'as r\'apidamente el
acceso a la producci\'on argentina. Asimismo, que la metodolog\'ia basada en
OA, piloteada aqu\'i por primera vez, es viable para monitorear el AA en
Argentina ya que arroja porcentajes similares a otros estudios nacionales e
internacionales.
