LAGOS is the union of two Latin American Conferences: the Brazilian Symposium on Graphs, Algorithms and Combinatorics (GRACO) and the Latin American Conference on Combinatorics, Graphs and Applications (LACGA).
LAGOS 2021 will be held in São Paulo, Brazil. LAGOS 2019 was held in Belo Horizonte, Brazil. As in previous editions, the conference proceedings was published in a selected journal, Electronic Notes in Theoretical Computer Science. A special issue of Discrete Applied Mathematics will be devoted to selected full papers after the conference. See also the LAGOS page at dblp.
The previous editions of LAGOS were held in Fortaleza, Brazil (GRACO 2001), Santiago, Chile (LACGA 2004), Angra dos Reis, Brazil (GRACO 2005), Puerto Varas, Chile (LAGOS 2007), Gramado, Brazil (LAGOS 2009), Bariloche, Argentina (LAGOS 2011), Playa del Carmen, Mexico (LAGOS 2013), Fortaleza, Brazil (LAGOS 2015), Marseille, France (LAGOS 2017), and Belo Horizonte, Brazil (LAGOS 2019). Statistics are available at here.