Mungiu-Pupăzan, Claudia - In: Annals of the University of Petrosani, Economics 9 (2009) 2, pp. 145-152
Satisfying the most needs of the consumer is done/achieved with economic assets. Each good has substitutes: using other goods where the original cost of using asset increases. The needs are desires. If needs are analyzed carefully, it is found to have various emergencies. People buy more or less...