| article html file updated | 5 February 2020 12:01 CET | Update | https://www.mdpi.com/1422-8599/2003/1/M309 |
| article html file updated | 9 May 2019 12:00 CEST | Update | - |
| article html file updated | 19 March 2019 17:55 CET | Update | - |
| article html file updated | 26 September 2017 09:50 CEST | Update | - |
| article xml uploaded. | 26 September 2017 09:48 CEST | Update | https://www.mdpi.com/1422-8599/2003/1/M309/xml |
| article html file updated | 23 September 2017 09:00 CEST | Update | - |
| article xml uploaded. | 23 September 2017 08:59 CEST | Update | - |
| article html file updated | 22 September 2017 08:13 CEST | Update | - |
| article xml uploaded. | 22 September 2017 08:12 CEST | Original file | - |
| article html file updated | 14 December 2016 09:02 CET | Original file | - |
