TY - GEN digital ID - 132630711 TI - Renewable energy policies and technological innovation: evidence based on patent counts AU - Johnstone, Nick AU - Hascic, Ivan AU - Popp, David PY - 2008 PB - Cambridge, Mass. NBER DB - UniCat KW - Zonder onderwerpscode: economie UR - https://www.unicat.be/uniCat?func=search&query=sysid:132630711 AB - ER -