Open Documents from iBooks in my application

Is it possible to open a document from iBooks in my application? I found only that:

NSString *stringURL = @"itms-books:";
NSURL *url = [NSURL URLWithString:stringURL];
[[UIApplication sharedApplication] openURL:url];

but with this开发者_高级运维 I can only open iBooks from my application.

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No that is not possible, there is no API to get document from iBooks.