The space-optimal version of a known rectengle enclosure reporting algorithm. [C.T.I. Technical Report] TR 95.12.41 - Κίτσιος, Ν.; Μακρής, Χρήστος; Μποζάνης, Παναγιώτης Δ.; Τσακαλίδης, Αθανάσιος (Computer Technology Institute, 1995)