| article html file updated | 8 May 2025 05:41 CEST | Update | https://www.mdpi.com/1420-3049/6/8/647 |
| article xml uploaded. | 8 May 2025 05:39 CEST | Original file | https://www.mdpi.com/1420-3049/6/8/647/xml |
| article pdf uploaded. | 8 May 2025 05:39 CEST | Version of Record | https://www.mdpi.com/1420-3049/6/8/647/pdf |
| article html file updated | 12 November 2022 10:05 CET | Update | - |
| article html file updated | 5 February 2020 11:00 CET | Update | - |
| article html file updated | 9 May 2019 13:59 CEST | Update | - |
| article html file updated | 19 March 2019 16:00 CET | Update | - |
| article html file updated | 10 September 2018 13:03 CEST | Original file | - |
| Retraction published | 31 July 2003 00:00 CEST | Retraction | http://www.mdpi.com/1420-3049/8/7/520 |
