Gehring, W J, E Wieschaus, and M Holliger. (1976) 1976. “The Use of ’normal’ and ’transformed’ Gynandromorphs in Mapping the Primordial Germ Cells and the Gonadal Mesoderm in Drosophila.”. J Embryol Exp Morphol 35 (3): 607-16. Reference Link