1. Diptera, family Ptychopteridae;Alexander;Genera Insect.,1927
2. Observations sur les métamorphoses internes de la gûepe et de l'abeille;Anglas;Bull. sclent. Fr. Belg.,1901
3. The connective tissue sheath of the locust nervous system: a histochemical study;Ashhurst;Q. Jl. microsc. Sci.,1959
4. A study of the changes occurring in the connective tissue associated with the central nervous system during the pupal stage of the wax moth, Galleria mellonella L;Ashhurst;J. Morph.,1964
5. Zur innern Metamorphose des Centralnervensystem der Insecten;Bauer;Zool. Jb., Anat.,1904