| article html file updated | 6 February 2020 17:11 CET | Update | https://www.mdpi.com/2227-7390/3/2/131 |
| article html file updated | 6 May 2019 22:46 CEST | Update | N/A |
| article html file updated | 25 March 2019 23:54 CET | Update | N/A |
| article html file updated | 21 August 2015 09:45 CEST | Update | N/A |
| article html file updated | 24 July 2015 08:40 CEST | Original file | N/A |
| article xml file uploaded | 24 July 2015 08:40 CEST | Original file | https://www.mdpi.com/2227-7390/3/2/131/xml |
| article pdf uploaded. | 31 March 2015 16:24 CEST | Version of Record | https://www.mdpi.com/2227-7390/3/2/131/pdf |
