This state of affairs persisted for several decades, until Michael K. Brett-Surman reexamined the pertinent material for his graduate studies in the 1970s and 1980s.
Takvo stanje stvari ostalo je nepromijenjeno nekoliko desetljeća, dok Michael K. Brett-Surman nije pregledao pertinentni materijal za svoje studentske radove 1970-ih i 1980-ih.