| article html file updated | 6 February 2020 18:53 CET | Update | https://www.mdpi.com/2304-6732/2/2/553 |
| article html file updated | 6 May 2019 19:30 CEST | Update | N/A |
| article html file updated | 26 March 2019 03:11 CET | Update | N/A |
| article html file updated | 5 November 2015 08:20 CET | Original file | N/A |
| article xml file uploaded | 5 November 2015 08:20 CET | Original file | https://www.mdpi.com/2304-6732/2/2/553/xml |
| article pdf uploaded. | 22 May 2015 09:53 CEST | Version of Record | https://www.mdpi.com/2304-6732/2/2/553/pdf |
