共 50 条
- [1] SOME QUESTIONS CONCERNING 4-COLOR PROBEM AMERICAN MATHEMATICAL MONTHLY, 1968, 75 (04): : 451 - &
- [2] QUESTIONS CONCERNING RED ARMYS 4 CROSSINGS OF CHIHSHUI RIVER ISSUES & STUDIES, 1976, 12 (05): : 74 - 97
- [9] 4 QUESTIONS TO 14 COMPOSERS CONCERNING THE PUBLIC AND NEW-MUSIC OSTERREICHISCHE MUSIK ZEITSCHRIFT, 1981, 36 (04): : 208 - 220