| article html file updated | 8 February 2020 05:19 CET | Update | https://www.mdpi.com/2306-5354/4/2/42 |
| article html file updated | 24 September 2019 17:06 CEST | Update | N/A |
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| article html file updated | 28 June 2017 12:37 CEST | Update | N/A |
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| article xml uploaded. | 11 May 2017 14:47 CEST | Update | https://www.mdpi.com/2306-5354/4/2/42/xml |
| article pdf uploaded. | 11 May 2017 14:47 CEST | Updated version of record | https://www.mdpi.com/2306-5354/4/2/42/pdf |
| article html file updated | 10 May 2017 14:19 CEST | Update | N/A |
| article pdf uploaded. | 10 May 2017 14:17 CEST | Updated version of record | https://www.mdpi.com/2306-5354/4/2/42/pdf-vor |
| article html file updated | 8 May 2017 11:27 CEST | Original file | N/A |
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