| article html file updated | 10 February 2020 11:52 CET | Update | https://www.mdpi.com/2076-0752/7/4/51 |
| article html file updated | 29 April 2019 03:51 CEST | Update | N/A |
| article html file updated | 14 April 2019 23:20 CEST | Update | N/A |
| article html file updated | 31 March 2019 20:51 CEST | Update | N/A |
| article html file updated | 26 December 2018 08:47 CET | Update | N/A |
| article html file updated | 20 September 2018 04:49 CEST | Original file | N/A |
| article pdf uploaded. | 20 September 2018 04:48 CEST | Version of Record | https://www.mdpi.com/2076-0752/7/4/51/pdf |
| article xml uploaded. | 20 September 2018 04:48 CEST | Update | https://www.mdpi.com/2076-0752/7/4/51/xml |
| article xml file uploaded | 20 September 2018 04:48 CEST | Original file | N/A |
