CIC/1917, can. 0396
§ 2. Prohibetur optio, reprobata contraria consuetudine, sed salva fundationis lege.
§ 3. Prima saltem dignitas in Capitulo cathedrali quantum fieri potest et ceteris paribus, laurea doctorali in sacra theologia vel iure canonico polleat."
Sources
1917 Codex Iuris Canonicis, can. 396, in: www.jgray.org (Last access: 19.03.2013).
Codex Iuris Senior, can. 396, in: www.catho.org (Last access: 02.03.2016).
GASPARRI, Pietro (Hg.), Codex Iuris Canonici Pii X Pontificis Maximi iussu
digestus, Benedicti Papae XV auctoritate promulgatus, Rom 1917, can. 396, S. 108, in: archive.org (Last access: 02.03.2016).