| article html file updated | 6 February 2020 20:20 CET | Update | https://www.mdpi.com/2227-7390/3/3/604 |
| article html file updated | 6 May 2019 16:27 CEST | Update | N/A |
| article html file updated | 26 March 2019 05:56 CET | Update | N/A |
| article html file updated | 16 October 2015 12:14 CEST | Original file | N/A |
| article xml file uploaded | 16 October 2015 12:14 CEST | Original file | https://www.mdpi.com/2227-7390/3/3/604/xml |
| article pdf uploaded. | 3 July 2015 13:25 CEST | Version of Record | https://www.mdpi.com/2227-7390/3/3/604/pdf |
