@misc{2018-collection-shadow,
 day = {23},
 kind = {collection},
 month = apr,
 note = {rev 5dtkw4P55XvjAZjmmnsxHebPmBjhbQ},
 title = {shadow},
 version = {rev 5dtkw4P55XvjAZjmmnsxHebPmBjhbQ},
 year = {2018}
}