Patent statistics as a measure of technological vitality : Aspden H. World Patent Information 5 (3), 170–173

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 136 KB
• Volume: 5
• Category: Article
• ISSN: 0172-2190
• DOI: 10.1016/0172-2190(83)90174-6