참고문헌
- Lecture Notes in Mathematics v.1384 Differential subordination of harmonic functions and martingales, Harmonic Analysis and Partial Differential Equations (EL Escorial, 1987) D. L. Burkholder
- Ann. Probab. v.22 Strong differential subordination and stochastic integration D. L.Burkholder
- Subharmonic functions W. K. Hayman;P. B. Kennedy
- Analysis I S. Lang
- Math. Z. v.27 Sur les fonction conjuguees M. Riesz
- Convex functions A.W.Roberts;D. E.Varberg
- Trigonometric Series, (2nd ed.) A. Zygmund,