I'm afraid I can't give much recommended / required reading, but here goes

>Elf ~Magic of the Moon~ by Mira
https://dynasty-scans.com/chapters/elf_magic_of_the_moon
(Absolute MUST)

>Seinaru Chichi no Elf Hime by Mira (a.k.a. : Sacred Milk of the Elf Princess)
https://mangadex.org/title/28fc2333-4d0b-4f7c-bb02-2b16bfad4006/seinaru-chichi-no-elf-hime
[Pic related] Nice and sweet too.

Mira also made two other elf stories, Witch's Estrus Lesson ("魔女先生の発情レッスン") and just recently one with elf sisters ("エルフsisの一日"). Neither is translated yet I think.
chinese version of the former here: https://e-hentai.org/g/3053955/aac2b13c3b/

>Under the Moonlit Night by Takeshisu
https://dynasty-scans.com/chapters/under_the_moonlit_night