Sometimes falsely attributed to Dionysius Carthusiensis, the Speculum is now attributed either to Jacobus de Gruytrode (cf. Bloomfield) or to Jacobus de Clusa (cf. L. Meier, Die Werke des Erfurter Karthäusers Jakob von Jüterbog, Münster, 1955) (CIBN). Jacobus de Clusa also recorded as Jacobus de Jüterbog or de Paradiso (Verfasserlexikon 2, Bd 4 col.478ff)
Sometimes falsely attributed to Dionysius Carthusiensis, the Speculum is now attributed either to Jacobus de Gruytrode (cf. Bloomfield) or to Jacobus de Clusa (cf. L. Meier, Die Werke des Erfurter Karthäusers Jakob von Jüterbog, Münster, 1955) (CIBN). Jacobus de Clusa also recorded as Jacobus de Jüterbog or de Paradiso (Verfasserlexikon 2, Bd 4 col.478ff)
