| article html file updated | 8 February 2020 08:16 CET | Update | https://www.mdpi.com/2226-4310/4/2/30 |
| article html file updated | 25 September 2019 08:19 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:30 CEST | Update | N/A |
| article html file updated | 28 June 2017 12:20 CEST | Update | N/A |
| article html file updated | 14 June 2017 11:39 CEST | Original file | N/A |
| article xml uploaded. | 14 June 2017 11:37 CEST | Original file | https://www.mdpi.com/2226-4310/4/2/30/xml |
| article pdf uploaded. | 14 June 2017 11:37 CEST | Version of Record | https://www.mdpi.com/2226-4310/4/2/30/pdf |
