| article html file updated | 7 February 2020 05:25 CET | Update | https://www.mdpi.com/2311-5637/2/1/5 |
| article html file updated | 5 May 2019 22:30 CEST | Update | N/A |
| article html file updated | 26 March 2019 22:30 CET | Update | N/A |
| article html file updated | 9 October 2016 08:54 CEST | Original file | N/A |
| article pdf uploaded. | 4 March 2016 11:52 CET | Version of Record | https://www.mdpi.com/2311-5637/2/1/5/pdf |
| article xml uploaded. | 4 March 2016 11:52 CET | Original file | https://www.mdpi.com/2311-5637/2/1/5/xml |
