Hartner, Willy. 1984. Oriens-Occidens: Ausgewählte Schriften Zur Wissenschafts- Und Kulturgeschichte. Festschrift Zum 60. Geburtstag. Eds. Yasukatsu Maeyama and Matthias Schramm. Vol. 2. Hildesheim & Zürich & New York: G. Olms.

Hartner, Willy. 1980. “Al-Battānī, Muḥammad Ibn Ğābir Ibn Sinān”. In Lexikon Des Mittelalters, 1:1551. München; Zürich: Artemis.

Hartner, Willy. 1971. “Ḥabas̲h̲ Al-Ḥāsib Al-Marwazī”. In Encyclopaedia of Islam, Second Edition. Vol. 3.

Hartner, Willy. 1971. Trepidation and Planetary Theories: Common Features in Late Islamic and Early Renaissance Astronomy. Roma: Accademia nazionale dei Lincei.

Hartner, Willy. 1971. “Trepidation and Planetary Theories: Common Features in Late Islamic and Early Renaissance Astronomy”. In Oriente E Occidente Nel Medioevo: Filosofia E Scienze, 609-29. Rome: Accademia nazionale dei Lincei.

Gillispie, Charles, and Willy Hartner. 1970. “Al-Battānī”. In Dictionary of Scientific Biography, 1:507-16. New York: Charles Scribner’s Sons.

Hartner, Willy. 1960. “Abū Kāmil”. In Encyclopaedia 0f Islam, New Edition, 2nd ed, 1:132-33. Leiden: E.J. Brill.

Hartner, Willy. 1950. “The Astronomical Instruments of Cha-Ma-Lu-Ting, Their Identification, and Their Relations to the Instruments of the Observatory of Marāgha”. Isis 41 (2): 184-94.

Hartner, Willy, and Julius Ruska. 1939. Katalog Der Orientalischen Und Lateinischen Originalhandschriften, Abschriften Und Photokopien Des Instituts Für Geschichte Der Medizin Und Der Naturwissenschaften in Berlin. Berlin: verlag von J. Springer.