“Existence Theorem for the Prices Fixed Point Problem of the Overlapping Generations Model, Via Metric Spaces Endowed With a Graph”. 2014. Studia Universitatis Vasile Goldiș Arad, Seria Științe Economice 24 (2): 57-65. https://publicatii.uvvg.ro/index.php/studiaeconomia/article/view/278.