1) M. KANEKO: Illustrated Laboratory Technique Series 9. Histological Preparation. Igaku-shoin, Tokyo, 1971. DELAFIELD'S hematoxylin and eosin method; pp. 43-45. KOSSA'S silver nitrate method; p. 64.
2) M. M. WINTROMBE: in “Clinical Hematology” Lea and Febiger, Philadelphia, 1956. p. 1185.
3) E. E. HESSER: Prog. Fish-Cult., 22, 164-171 (1960).