Digital library v/s Electronic library v/s Hybrid library

Many of us get confused when using the terms digital library and electronic library. At times these two terms are used interchangeably, almost like synonymous terms. Is there any difference between these two terms? What do you think? Be free to express your views. I am submitting the following definitions which may help us develop a better understanding of the two concepts. The term hybrid library is also defined to provide more clarity. Do post your views and comments.

Digital Library

Collection of electronic resources that provides direct/indirect access to a systematically organized collection of digital objects.

Hybrid Library

Provides services in a mixed-mode, electronic and paper, environment, particularly in a co-coordinated way. Derived from a strand of eLibrary  which explored the issues surrounding the retrieval and delivery of information in these types of environment but also investigated the integration of different electronic services so that single search approach could be offered to the End user.

Virtual Library

Access to electronic information in a variety of remote locations through a local online catalogue or other gateway, such as the internet.