^^7±2  sette piu' o meno due.

George Miller's classic 1956 paper "The Magical Number Seven, Plus or Minus Two."

1. wp/The_Magical_Number_Seven,_Plus_or_Minus_Two
2. L'articolo originale .pdf
3. Version of the paper with figures adapted for HTML and proofread and approved by Miller in 1997
4. edward tufte