5

Aerodynamic Analysis of a Helical Vertical Axis Wind Turbine

Year:
2017
Language:
english
File:
PDF, 9.84 MB
english, 2017
47

Exploring the cross-country gap in patenting: A Stochastic Frontier Approach

Year:
2009
Language:
english
File:
PDF, 596 KB
english, 2009