Publications 2015 Inside the black box of outcome additionality: Effects of early-stagegovernment subsidies on resource accumulation and new ventureperformance, Research Policy - Anna Söderblom, Mikael Samuelssson, Johan Wiklund, Rickard Sandberg Testing for a unit root in noncasual autoregressive models, Journal of Time Series Analysis - Pentti Saikkonen, Rickard Sandberg