Letter with Attachment 1) Covering letter by H.Biller to his Reviewer's Report on B.Boehm's paper. 2) A separate page of, supposedly, either this Report or this paper. Date: 12.02.1980 Original document language: English Authors: H. Biller Organizations: IFIP Persons: Barry W. Boehm Addressee: Andrei Petrovich Ershov