Cherubim and Seraphim Studies (Links)

 I think these will help for future references too:

https://ora.ox.ac.uk/objects/uuid:7e6701bd-90ae-4fa3-b269-79e1dad9f504

https://www.thetorah.com/article/the-seraphim

https://www.oxfordbibliographies.com/display/document/obo-9780195393361/obo-9780195393361-0260.xml

https://www.mohrsiebeck.com/en/book/the-ark-and-the-cherubim-9783161554322