Many works attributed to him are also attributed to others.
There are a number of other works attributed to him but their authorship has not been validated.
Other theological works attributed to James are no longer extant.
The works now attributed to him with some certainty are:
However other works attributed to him are extremely difficult to date with any accuracy.
The number of surviving works attributed to her varies between fewer than 20 and about 35.
It is the most important of the surviving works attributed to Lanfranc.
Nonetheless, the over 100 works attributed to him include many other shapes.
There is doubt whether some of the works attributed to him are really his.
Other works attributed to him are only found now in fragments.