| article html file updated | 8 February 2020 07:53 CET | Update | https://www.mdpi.com/2075-4450/8/2/61 |
| article html file updated | 25 September 2019 06:20 CEST | Update | N/A |
| article html file updated | 3 May 2019 18:12 CEST | Update | N/A |
| article html file updated | 30 June 2017 05:41 CEST | Update | N/A |
| article html file updated | 13 June 2017 03:17 CEST | Original file | N/A |
| article xml uploaded. | 13 June 2017 03:16 CEST | Original file | https://www.mdpi.com/2075-4450/8/2/61/xml |
| article pdf uploaded. | 13 June 2017 03:16 CEST | Updated version of record | https://www.mdpi.com/2075-4450/8/2/61/pdf |
| article pdf uploaded. | 9 June 2017 14:52 CEST | Version of Record | https://www.mdpi.com/2075-4450/8/2/61/pdf-vor |
