| article html file updated | 30 August 2025 00:04 CEST | Update | https://www.mdpi.com/2077-0472/6/4/66 |
| article html file updated | 16 July 2022 04:11 CEST | Update | N/A |
| article html file updated | 7 February 2020 19:49 CET | Update | N/A |
| article html file updated | 22 September 2019 12:37 CEST | Update | N/A |
| article html file updated | 4 May 2019 18:46 CEST | Update | N/A |
| article html file updated | 28 December 2016 05:28 CET | Update | N/A |
| article html file updated | 17 December 2016 04:43 CET | Original file | N/A |
| article xml uploaded. | 17 December 2016 04:42 CET | Original file | https://www.mdpi.com/2077-0472/6/4/66/xml |
| article pdf uploaded. | 17 December 2016 04:42 CET | Version of Record | https://www.mdpi.com/2077-0472/6/4/66/pdf |
