Puscaciu, Viorica; Mihalache, Mirela; Puscaciu, Rose-Marie - In: Knowledge Horizons - Economics 6 (2014) 3, pp. 58-61
The model of pyramid, invented by the ancient Egyptians was used by mankind in different ways, during the time. In our research we try to underline the link between some pyramidal schemes: that means our research has to show a comparative approach of two aspects apparently without any link, but...