| article html file updated | 30 August 2025 02:04 CEST | Update | https://www.mdpi.com/2309-608X/4/1/2 |
| article html file updated | 16 July 2022 08:09 CEST | Update | N/A |
| article html file updated | 9 February 2020 01:07 CET | Update | N/A |
| article html file updated | 29 September 2019 11:11 CEST | Update | N/A |
| article html file updated | 2 May 2019 06:19 CEST | Update | N/A |
| article html file updated | 18 April 2019 04:17 CEST | Update | N/A |
| article html file updated | 28 March 2019 10:57 CET | Update | N/A |
| article html file updated | 11 December 2018 08:23 CET | Update | N/A |
| article html file updated | 28 March 2018 10:22 CEST | Update | N/A |
| article html file updated | 25 December 2017 08:42 CET | Update | N/A |
| article xml uploaded. | 25 December 2017 08:40 CET | Update | https://www.mdpi.com/2309-608X/4/1/2/xml |
| article pdf uploaded. | 25 December 2017 08:40 CET | Updated version of record | https://www.mdpi.com/2309-608X/4/1/2/pdf |
| article html file updated | 24 December 2017 13:56 CET | Original file | N/A |
| article xml uploaded. | 24 December 2017 13:54 CET | Original file | N/A |
| article pdf uploaded. | 24 December 2017 13:54 CET | Version of Record | https://www.mdpi.com/2309-608X/4/1/2/pdf-vor |
