| article html file updated | 14 August 2026 12:54 CEST | Update | https://www.mdpi.com/2304-8158/6/4/24 |
| article html file updated | 8 February 2020 02:10 CET | Update | N/A |
| article html file updated | 23 September 2019 23:51 CEST | Update | N/A |
| article html file updated | 4 May 2019 05:12 CEST | Update | N/A |
| article html file updated | 28 April 2017 07:57 CEST | Update | N/A |
| article html file updated | 27 March 2017 05:31 CEST | Update | N/A |
| article html file updated | 26 March 2017 22:28 CEST | Update | N/A |
| article html file updated | 25 March 2017 22:28 CET | Update | N/A |
| article html file updated | 24 March 2017 22:33 CET | Update | N/A |
| article html file updated | 24 March 2017 13:42 CET | Original file | N/A |
| article xml uploaded. | 24 March 2017 13:41 CET | Original file | https://www.mdpi.com/2304-8158/6/4/24/xml |
| article pdf uploaded. | 24 March 2017 13:41 CET | Version of Record | https://www.mdpi.com/2304-8158/6/4/24/pdf |
