SME open innovation implicating factors in different innovation phasesLahi, Allan; Elenurm, TiitThe International Journal of Management Science and Information Technology2015 / p. 29-45 https://www.econstor.eu/handle/10419/178797 https://www.econstor.eu/bitstream/10419/178797/1/IJMSIT_y2015_i16_p029-045.pdf