| article html file updated | 6 February 2020 16:37 CET | Update | https://www.mdpi.com/2079-9268/5/1/3 |
| article html file updated | 6 May 2019 23:46 CEST | Update | - |
| article html file updated | 25 March 2019 22:57 CET | Update | - |
| article html file updated | 9 November 2015 10:47 CET | Original file | - |
| article xml file uploaded | 9 November 2015 10:47 CET | Original file | https://www.mdpi.com/2079-9268/5/1/3/xml |
| article pdf uploaded. | 13 March 2015 14:02 CET | Version of Record | https://www.mdpi.com/2079-9268/5/1/3/pdf |
