[1] H. ALLEN C. L. BELNA:
Disjoint essential angular cluster sets. J. Korean Math. Soc. 2 (1974), 49-51.
MR 0382650
[2] A. M. BRUCKNER:
Differentiation of real functions. Lecture notes in Mathematics, No. 659, Springer Verlag, 1978.
MR 0507448 |
Zbl 0382.26002
[3] E. P. DOLŽENKO:
The boundary properties of arbitrary functions. Russian, Isv. Akad. Nauk SSSR, Ser. Mat. 31 (1967), 3-14.
MR 0217297
[4] M. J. EVANS P. D. HUMKE:
Directional cluster sets and essential directional cluster sets of гeal functions defined in the upper half plane. Rev. Roumaine Math. Pures Appl. 23 (1978), 533-542.
MR 0492273
[5] K. M. GARG:
On asymmetrical derivates of non-differentiable functions. Can. J. Math. 20 (1968), 135-143.
MR 0220878 |
Zbl 0194.08601
[6] R. L. JEFFERY:
The derivatives of arbitrary functions over arbitrary sets. Ann. of Mat. 36 (1935), 438-447.
MR 1503233
[7] L. MIŠÍK:
Notes on an approximate derivative. Mat. Časop. 22 (1972), 108-114.
MR 0315057
[8] D. PREISS:
Approximate derivatives and Baire classes. Czech. Math. Journ. 21 (1971), 373-382.
MR 0286951 |
Zbl 0221.26007
[9] H. H. PU J. D. CHEN H. W. PU:
A theorem on approximate derivates. Bull. Inst. Math. Acad. Sinica 2 (1974), 87-91.
MR 0342654
[11] L. E. SNYDER:
Approximate Stolz angle limits. Proc. Amer. Math. Soc. 17 (1966), 416-422.
MR 0188383 |
Zbl 0158.05102
[12] G. TOLSTOV:
Sur la dérivée approximative exacte. Mat. Sb. 4 (46) (1938), 499-504.
Zbl 0021.01602
[1З] L. ZAJÍČEK:
On cluster sets of arbitrary functions. Fund. Math. 83 (1974), 197-217.
MR 0338294
[14] L. ZAJÍČEK:
On the intersection of the sets of the right and left internal approximate derivatives. Czech. Math. Journ. 23 (1973), 629-634.
MR 0323969
[15] L. ZAJÍČEK:
On the symmetry of Dini derivates of arbitrary functions. Comment. Math. Univ. Carolinae 22 (1981), 195-209.
MR 0609947