⁴¹ The contemporary Chrysantine reformed neumatic notation has its roots, and could be traced back to the earliest Paleobyzantine notations, from which also the later Russian Chant notations developed, as well as the Gregorian neumes. Discussing further this intricate historical process is beyond the scope of this commentary, but for a detailed research see: Constantin Floros, Einführung in die Neumenkunde [trans. Introduction to the science of neumes], (Wilhemshaven: Florian Noetzel HmbH, 2000), (where he ascertains that the Gregorian neumes originated from the Byzantine neumatic notation directly, (which is his original contribution to knowledge.))