| article html file updated | 7 February 2020 03:36 CET | Update | https://www.mdpi.com/2226-4787/4/1/5 |
| article html file updated | 21 September 2019 09:56 CEST | Update | N/A |
| article html file updated | 6 May 2019 02:15 CEST | Update | N/A |
| article html file updated | 26 March 2019 18:49 CET | Update | N/A |
| article html file updated | 29 March 2016 11:53 CEST | Original file | N/A |
| article xml uploaded. | 19 January 2016 11:28 CET | Original file | https://www.mdpi.com/2226-4787/4/1/5/xml |
| article pdf uploaded. | 19 January 2016 11:28 CET | Version of Record | https://www.mdpi.com/2226-4787/4/1/5/pdf |
