These relationships are facilitated by the existence of social networks comprising kinship and friendship linkages between residents from both sides of the border López, 1994; Ojeda, 1994; Velasco, 2014.
Éstas se facilitan por la existencia de redes sociales constituidas por lazos de parentesco y amistad de los residentes de ambos lados de la frontera López, 1994; Ojeda, 1994; Velasco, 2014.