The following comment makes reference to 'Deutsch-Shiffman'. I believe it's a typo. it should be 'Schiffman' if the author intent to cite this paper:

Deutsch, L. Peter, and Allan M. Schiffman. "Efficient implementation of the Smalltalk-80 system." Proceedings of the 11th ACM SIGACT-SIGPLAN symposium on Principles of programming languages. 1984.

I ask 'Deutsch-Shiffman' to google and this is what google answers me. seems reasonable.

// Case 2: we have some handlers, with loaded exception klasses that have
// no subklasses. We do a Deutsch-Shiffman style type-check on the incoming
// exception oop and branch to the handler directly.
...
void Parse::catch_inline_exceptions(SafePointNode* ex_map) {