B. Harris

Determination of the relative sign of neutron and proton transition matrix elements for the S34(0 22+) transition

H. Nann, W. Jacobs, A. Saha, 1984 .

Solitary sound play during acquisition of English vocalizations by an African Grey parrot (Psittacus erithacus): Possible parallels with children’s monologue speech

I. Pepperberg, B. Harris, Katherine J. Brese, 1991, Applied Psycholinguistics.