Looking for two dissertations on PECS vs Sign Language

[Guest guest]

Hoping someone can help me in finding these ...

1) , A. E. (2002). Augmentative communication and autism: A

comparison of sign language and the picture exchange communication system.

Unpublished

? doctoral dissertation, University of California, San Diego

2) Tincani, (2002/2003?) Comparing the Picture Exchange Communication

System and Sign Language Training for Children with Autism. Unpublished ?

doctoral dissertation Ohio State

Thanks in advance -

Nikia