Gadzira shanduro yakaoma zvikuru yemutsara uyu M.Stroppel 1995'' Compact Projective Planes ', W. de Gruyter 87.7.
Chokwadika, shanduro yakaoma zvikuru yemutsara ndeiyi "M.Stroppel 1995 '' Compact Projective Planes ',' W. de Gruyter Chitsauko 8 uye munguva pfupi yapfuura muna H. Salzmann 2014'' Compact planes, kunyanya 8-dimensional. "