Since 1957 and the publication of “Technical Change and the Aggregate Production
Function” by Robert M. Solow (1957, pp. 312-20), the focus of interest has shifted
gradually from the original Cobb-Douglas production function to the so-called
augmented Solow production function. Here “the augmentation” (enforcing or
strengthening, AG) generally means that total factor productivity (A) is broken down
into two parts, one of which is usually linked to labour, i.e. the augmenting part has the
same elasticity as labour: