This is from my college psychology study guide:

"In the Electra conflict, the girl lustfully desires her father, especially his penis, since she doesn't have one. Hence the term, penis envy. But the girl only passively identifies with the mother as a way of symbolically possessing the father and his penis, because she lacks the driving force of castration anxiety that boys experience. In the end, without that terrible fear, girls don't develop superegos as strong as those of boys..."

(Barron's EZ-101 Study Keys, Psychology)

My psych textbooks says:

"In Freud's view, healthy psychosexual development hinges on the resolution of the Oedipal conflict. Why? Because continued hostility toward the same-sex parent may prevent the child from identifying adequately with that parent. Freudian theory predicts that without such identification, many aspects of the child's development won't progress as they should."

(here they use the term Oedipal for both Oedipal and Electra complexes.)

(Psychology Themes and Variations by Weiten)

That's all I got. Sorry they're so general!

Good luck.

-apislily