| article html file updated | 7 February 2020 18:42 CET | Update | https://www.mdpi.com/2073-431X/5/4/30 |
| article html file updated | 4 May 2019 21:09 CEST | Update | N/A |
| article html file updated | 28 December 2016 08:31 CET | Update | N/A |
| article html file updated | 28 November 2016 09:37 CET | Original file | N/A |
| article xml uploaded. | 28 November 2016 09:35 CET | Update | https://www.mdpi.com/2073-431X/5/4/30/xml |
| article xml uploaded. | 28 November 2016 09:35 CET | Original file | N/A |
| article pdf uploaded. | 28 November 2016 09:35 CET | Version of Record | https://www.mdpi.com/2073-431X/5/4/30/pdf |
