| article html file updated | 7 February 2020 19:15 CET | Update | https://www.mdpi.com/2311-5637/2/4/20 |
| article html file updated | 22 September 2019 09:28 CEST | Update | N/A |
| article html file updated | 4 May 2019 20:00 CEST | Update | N/A |
| article html file updated | 29 December 2016 06:46 CET | Update | N/A |
| article html file updated | 8 December 2016 06:37 CET | Original file | N/A |
| article xml uploaded. | 8 December 2016 06:35 CET | Original file | https://www.mdpi.com/2311-5637/2/4/20/xml |
| article pdf uploaded. | 8 December 2016 06:35 CET | Version of Record | https://www.mdpi.com/2311-5637/2/4/20/pdf |
