共 23 条
- [1] CARTER CF, 1958, INDUSTRY TECHNICAL P
- [2] COOPER A, 1964, HARVARD BUSINESS MAY, V3
- [3] ENOS JL, 1962, RATE DIRECTION INVEN
- [4] FELLNER W, 1951, Q J ECON, P55
- [5] GALBRAITH JK, 1968, AMERIKANSK KAPITALIS
- [6] HAMBERG D, 1964, CANADIAN J ECONO FEB
- [7] JANSSON O, 1970, TEKNISKA INNOVATIONE
- [8] Jewkes J., 1958, SOURCES INVENTION
- [9] JOHANNISSON B, 1970, FORETAGSSTORLEK FORS
- [10] Kaplan A., 1955, J AM STAT ASSOC, V50, P1397