| article html file updated | 30 August 2025 01:50 CEST | Update | https://www.mdpi.com/2076-3921/6/4/98 |
| article html file updated | 16 July 2022 07:42 CEST | Update | N/A |
| article html file updated | 8 February 2020 22:40 CET | Update | N/A |
| article html file updated | 28 September 2019 20:50 CEST | Update | N/A |
| article html file updated | 2 May 2019 11:43 CEST | Update | N/A |
| article html file updated | 18 April 2019 09:20 CEST | Update | N/A |
| article html file updated | 2 January 2018 20:30 CET | Update | N/A |
| article html file updated | 30 November 2017 15:27 CET | Original file | N/A |
| article xml uploaded. | 30 November 2017 11:14 CET | Original file | https://www.mdpi.com/2076-3921/6/4/98/xml |
| article pdf uploaded. | 30 November 2017 11:14 CET | Version of Record | https://www.mdpi.com/2076-3921/6/4/98/pdf |
