| article html file updated | 7 February 2020 16:36 CET | Update | https://www.mdpi.com/2313-433X/2/4/30 |
| article html file updated | 5 May 2019 01:11 CEST | Update | N/A |
| article html file updated | 19 October 2016 11:20 CEST | Original file | N/A |
| article xml uploaded. | 19 October 2016 11:18 CEST | Update | https://www.mdpi.com/2313-433X/2/4/30/xml |
| article xml uploaded. | 19 October 2016 11:18 CEST | Update | N/A |
| article xml uploaded. | 19 October 2016 11:18 CEST | Update | N/A |
| article xml uploaded. | 19 October 2016 11:18 CEST | Original file | N/A |
| article pdf uploaded. | 19 October 2016 11:18 CEST | Version of Record | https://www.mdpi.com/2313-433X/2/4/30/pdf |
