| article html file updated | 14 August 2026 20:54 CEST | Update | https://www.mdpi.com/2226-4310/5/1/6 |
| article html file updated | 9 February 2020 02:33 CET | Update | N/A |
| article html file updated | 29 September 2019 19:15 CEST | Update | N/A |
| article html file updated | 2 May 2019 03:18 CEST | Update | N/A |
| article html file updated | 18 April 2019 01:28 CEST | Update | N/A |
| article html file updated | 28 March 2019 14:23 CET | Update | N/A |
| article html file updated | 26 March 2018 15:51 CEST | Update | N/A |
| article html file updated | 10 January 2018 14:06 CET | Original file | N/A |
| article xml uploaded. | 10 January 2018 14:05 CET | Original file | https://www.mdpi.com/2226-4310/5/1/6/xml |
| article pdf uploaded. | 10 January 2018 14:05 CET | Version of Record | https://www.mdpi.com/2226-4310/5/1/6/pdf |
