query: SELECT ?item ?value WHERE
  {
    ?item p:P953/ps:P953 ?value .
    
    FILTER( REGEX(REPLACE(STR(?value), "%20", " "), "^(https?:\\/\\/www\\.jstor\\.org\\/stable\\/((\\d{2}.\\d{4}\\/[a-z\\d.]+)|mammalianspecies[\\d.]+|[1-9]\\d{0,8}))$") )
  }