Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
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Librería Kolima (Madrid)
Librería Proteo (Málaga)
Philipp Bell develops a mathematical diffusion model for system-effect technologies building on the specific prerequisites needed for an adequate representation of their unique characteristics. He shows that descriptive fit and forecasting validity of his model, numerically as well as graphically, are generally greatly superior to even the most flexible traditional models.