[1] R. ANANTHARAMAN T. LEWIS J. H. M. WHITFIELD: 
Smoothability, strong smoothability and dentability in Banach spaces. to appear. 
MR 0611210[2] D. CUDIA: 
The geometry of Banach spaces. Smoothness. Trans. Amer. Math. Soc. 110 (1964), 284-314. 
MR 0163143 | 
Zbl 0123.30701[3] J. B. COLIER: 
A class of strong differentiability spaces. Proc. Amer. Math. Soc. 53 (1975), 420-422 
MR 0388044[4] M. M. DAY: 
Strict convexity and smoothness of normed spaces. Trans. Amer. Math. Soc. 78 (1955), 516-528. 
MR 0067351 | 
Zbl 0068.09101[5] J. DIESTEL: 
Geometry of Banach spaces. Selected topics. Lecture Notes in Math. 485 (1975), Springer-Verlag. 
MR 0461094 | 
Zbl 0307.46009[6] M. EDELSTEIN: 
Smoothability versus dentability. Comment. Math. Univ. Carolinae 14 (1973), 127-133. 
MR 0320708 | 
Zbl 0264.46013[8] K. JOHN V. ZIZLER: 
A note on strong differentiability spaces. Comment. Math. Univ. Carolinae 17 (1976), 127-134. 
MR 0402469[10] J. KURZWEIL: 
On approximation in real Banach spaces. Studia Math. 14 (1954), 214-231. 
MR 0068732[11] E. B. LEACH J. H. M. WHITFIELD: 
Differentiable functions and rough norms on Banach spaces. Proc. Amer. Math. Soc. 33 (1972), 120-126. 
MR 0293394[12] T. LEWIS: 
On the duality between smoothability and dentability. Proc. Amer. Math. Soc. 63 (1977), 239-244. 
MR 0445275 | 
Zbl 0352.46008[13] I. NAMIOKA R. R. PHELPS: 
Banach spaces which are Asplund spaces. Duke Mat. J. 42 (1975), 735-749. 
MR 0390721[14] R. R. PHELPS: 
Dentability and extreme points in Banach spaces. J. Functional Analysis 16 (1974), 78-90. 
MR 0352941 | 
Zbl 0287.46026[15] R. R. PHELPS: Differentiability of convex functions on Banach spaces. Lecture notes, London 1978.
[16] Ch. STEGALL: 
The duality between Asplund spaces and spaces with the Radon Nikodym property. Israel J. Math., to appear 
MR 0493268 | 
Zbl 0374.46015[17] Ch. STEGALL: 
The Radon Nikodym property in conjugate Banach spaces. Trans. Amer. Math. Soc. 206 (1975), 213-223. 
MR 0374381 | 
Zbl 0318.46056[18] Ch. STEGALL: 
The Radon Nikodym property in conjugate Banach spaces II. Trans. Amer. Math. Soc., to appear. 
MR 0603779 | 
Zbl 0475.46016[19] F. SULLIVAN: 
Dentability, smoothability and stronger properties in Banach spaces. Indiana Univ. Math. J. 26 (1977), 545-553. 
MR 0438088 | 
Zbl 0376.46010[20] F. SULLIVAN: 
On the duality between Asplund spaces and spaces with the Radon Nikodym property. to appear. 
MR 0482090 | 
Zbl 0384.46009