| article html file updated | 29 August 2025 22:52 CEST | Update | https://www.mdpi.com/2072-6651/8/4/87 |
| article html file updated | 16 July 2022 02:02 CEST | Update | - |
| article html file updated | 7 February 2020 06:17 CET | Update | - |
| article html file updated | 21 September 2019 13:46 CEST | Update | - |
| article html file updated | 5 May 2019 20:39 CEST | Update | - |
| article html file updated | 27 March 2019 00:08 CET | Update | - |
| article html file updated | 28 April 2016 10:24 CEST | Original file | - |
| article xml uploaded. | 23 March 2016 11:05 CET | Original file | https://www.mdpi.com/2072-6651/8/4/87/xml |
| article pdf uploaded. | 23 March 2016 11:05 CET | Version of Record | https://www.mdpi.com/2072-6651/8/4/87/pdf |
