sentences:  Probably his most frequently-cited work is his study of authorship problems in the Beaumont/Fletcher plays.Titled "The Shares of Fletcher and His Collaborators in the Beaumont and Fletcher Canon," it was published in seven annual issues of the journal "Studies in Bibliography," published by the Bibliographical Society of the University of Virginia (1956–62).Hoy identified specific linguistic markers for individual dramatists, most notably a highly distinctive pattern of preferences for John Fletcher, and then employed those markers to distinguish the respective contributions of the collaborators.