@misc{2017-library-png,
 day = {11},
 kind = {library},
 month = jul,
 note = {rev 5dtQRi8n8HgLoMUrSi9dm6KGcZYYig},
 title = {png},
 version = {rev 5dtQRi8n8HgLoMUrSi9dm6KGcZYYig},
 year = {2017}
}