| article html file updated | 9 February 2020 06:43 CET | Update | https://www.mdpi.com/2227-7390/6/2/26 |
| article html file updated | 30 September 2019 19:48 CEST | Update | N/A |
| article html file updated | 1 May 2019 18:16 CEST | Update | N/A |
| article html file updated | 17 April 2019 17:35 CEST | Update | N/A |
| article html file updated | 28 March 2019 23:29 CET | Update | N/A |
| article html file updated | 14 March 2018 10:07 CET | Update | N/A |
| article html file updated | 14 February 2018 16:32 CET | Original file | N/A |
| article xml uploaded. | 14 February 2018 16:30 CET | Original file | https://www.mdpi.com/2227-7390/6/2/26/xml |
| article pdf uploaded. | 14 February 2018 16:30 CET | Version of Record | https://www.mdpi.com/2227-7390/6/2/26/pdf |
