| article html file updated | 8 February 2020 01:40 CET | Update | https://www.mdpi.com/2073-4441/9/3/221 |
| article html file updated | 23 September 2019 20:57 CEST | Update | N/A |
| article html file updated | 4 May 2019 06:16 CEST | Update | N/A |
| article html file updated | 28 March 2017 03:58 CEST | Update | N/A |
| article html file updated | 17 March 2017 11:17 CET | Original file | N/A |
| article xml uploaded. | 17 March 2017 11:16 CET | Original file | https://www.mdpi.com/2073-4441/9/3/221/xml |
| article pdf uploaded. | 17 March 2017 11:16 CET | Version of Record | https://www.mdpi.com/2073-4441/9/3/221/pdf |
