NewCROP has Kaki information at: Japanese Persimmon—Julia Morton, Fruits of Warm Climates
Mediterranean Fruits—Joan Tous and Louise Ferguson
New Subtropical Tree Crops in California—Louise Ferguson and Marylu Arpaia
Magness J.R. et al. 1971. Food and feed crops of the United States.
And outside links to more Kaki info:
KAKI "FRUIT FACTS" (Fruit Facts are a series of publications of the the California Rare Fruit Growers, Inc. that contain information on individual fruits, including botanical identification, description and culture notes based on California research, and characteristics of cultivars).
Growing Oriental Persimmons in North Carolina