Books on Amazon:
Meaning/Reference/Divine Position/Wittgenstein/Evans: E.g. someone is in love with one of two identical twins - God, if he could look into his head, could not say in which of the two, if the person question does not know for a moment. - ((s) because in the mental state and with the twin no additional information could be found.) - Evans: the (description) theory of mind cannot explain why erroneous descriptions cannot make the difference.
G. Evans/J. McDowell
Truth and Meaning Oxford 1977
The Varieties of Reference (Clarendon Paperbacks) Oxford 1989