Is there a reference to scientific approaches to singing? For instance a classic book, or a journal? I'm mainly after the acoustics of the voice, and studies about the projection of the sound and the use of the resonance cavities in the head.
What I've found is the book "Dynamics of the singing voice" which is somehow good, but also disappointing (at the end, I remember it refers to quantum effects and the author even sadly cites charlatan Deepak Chopra).
Hence I'm looking for a more serious reference.