Dear Colleagues,

I need to find Gayatri mantras to Sarasvati with their scriptural sources.  But in the Muktabodha digital library I was only able to find one gayatri to  Sarasvati.  It was to nIlasarasvati in the tArArahasya..

oṃ nīlasarasvati dhīmahi sāradāyai vidmahe tannaḥ śive pracodayāt


1) Can anyone give me some more references to Gayatri mantras to Sarasvati

2)Any conjectures why Gayatri mantras to Sarasvati aren't more common in the tantric literature.  

Thanks,
Harry Spier