| article html file updated | 9 February 2020 05:55 CET | Update | https://www.mdpi.com/2079-9721/6/1/15 |
| article html file updated | 1 May 2019 20:03 CEST | Update | N/A |
| article html file updated | 17 April 2019 19:09 CEST | Update | N/A |
| article html file updated | 28 March 2019 21:48 CET | Update | N/A |
| article html file updated | 27 March 2018 14:46 CEST | Update | N/A |
| article html file updated | 8 February 2018 09:03 CET | Original file | N/A |
| article xml uploaded. | 8 February 2018 09:02 CET | Update | https://www.mdpi.com/2079-9721/6/1/15/xml |
| article xml uploaded. | 8 February 2018 09:02 CET | Original file | N/A |
| article pdf uploaded. | 8 February 2018 09:02 CET | Version of Record | https://www.mdpi.com/2079-9721/6/1/15/pdf |
