【作者(必填)】Gotsch, M. and C. Hipp (2011). "Measurement of innovation activities in the knowledge-intensive services industry: a trademark approach." The Service Industries Journal.

【文题(必填)】

【年份(必填)】

【全文链接或数据库名称(选填)】http://www.tandfonline.com/doi/abs/10.1080/02642069.2011.574275