| article html file updated | 8 February 2020 00:42 CET | Update | https://www.mdpi.com/2226-4310/4/1/13 |
| article html file updated | 23 September 2019 15:27 CEST | Update | N/A |
| article html file updated | 4 May 2019 08:23 CEST | Update | N/A |
| article html file updated | 29 March 2017 05:58 CEST | Update | N/A |
| article html file updated | 3 March 2017 14:39 CET | Original file | N/A |
| article xml uploaded. | 3 March 2017 14:38 CET | Update | https://www.mdpi.com/2226-4310/4/1/13/xml |
| article pdf uploaded. | 3 March 2017 14:38 CET | Version of Record | https://www.mdpi.com/2226-4310/4/1/13/pdf |
