Assistant professor Graduate School Business, University Chicago, 1969-1973. Associate professor New York University, New York City, 1973-1977. Professor Graduate School Business Administration, since 1977.
Assistant director Vincent C. Ross Institute Accounting Research, since 1977. President Price Institute for Entrepreneurial Studies, 1979-1982. Consultant government institutions.
Associate director research Accounting Objective Study Group, 1971-1973.
- Smoothing Income Numbers: Objectives, Means and Implications (Addison-Wesley paperback series in accounting)
- Co-author: Accounting, A Management Approach, 1979, Corporate Financial Information for Government Decision Making, 1975, Relevant Financial Statements, 1978, Smoothing Income Numbers: Objectives, Means, and Implications, 1981, Entrepreneurship, 1983. Editorial board: Accounting Rev, 1974-1976, Accounting Jour, since 1975, Accounting Organization and Soc, since 1974, Journal Accounting, Auditing and Fin, since 1978. Special editor: Management Sci, 1980.