共 50 条
- [1] ON A CLASS OF HYPOELLIPTIC DIFFERENTIAL OPERATORS PROCEEDINGS OF THE JAPAN ACADEMY, 1970, 46 (01): : 33 - &
- [5] INDEX OF HYPOELLIPTIC PSEUDODIFFERENTIAL OPERATORS ON RN PROCEEDINGS OF THE JAPAN ACADEMY, 1972, 48 (06): : 402 - +
- [8] HYPOELLIPTIC DIFFERENTIAL OPERATORS WITH DOUBLE CHARACTERISTICS PROCEEDINGS OF THE JAPAN ACADEMY, 1974, 50 (08): : 546 - 548