| article html file updated | 30 August 2025 01:54 CEST | Update | https://www.mdpi.com/2076-3921/6/4/102 |
| article html file updated | 16 July 2022 07:49 CEST | Update | N/A |
| article html file updated | 8 February 2020 23:20 CET | Update | N/A |
| article html file updated | 29 September 2019 00:53 CEST | Update | N/A |
| article html file updated | 2 May 2019 10:13 CEST | Update | N/A |
| article html file updated | 18 April 2019 07:52 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:30 CET | Update | N/A |
| article html file updated | 6 December 2017 13:01 CET | Original file | N/A |
| article xml uploaded. | 6 December 2017 13:00 CET | Original file | https://www.mdpi.com/2076-3921/6/4/102/xml |
| article pdf uploaded. | 6 December 2017 13:00 CET | Version of Record | https://www.mdpi.com/2076-3921/6/4/102/pdf |