Mechanics and structure of IEEE style:
The IEEE citation style is now widely used in electrical, electronic and computing publications. IEEE provides instructions for authors for each type of publication such as journals, magazines, newsletters, and standards.
IEEE is a numbered style with two components:
There are variations of the IEEE style. The following are examples of references in the IEEE transactions, journals, and letters: information for authors <http://www.ieee.org/documents/info_authors_kit.pdf>. Further examples in this style can be found in the Institute of Electrical and Electronics Engineers site <http://www.ieee.org/portal/site>.
Using this system, references are numbered in the order in which they are first cited in the text. If the same reference is cited later in the text, the same number is given. For example
"The theory was first put forward in 1987 "
"Scholtz  has argued that......."
"Several recent studies , , , ,  have suggested that..."
|, , ||[1, 3, 5]|
| - ||[1-5]|
If you need to cite the same source more than once:
Direct the reader to specific pages numbers where necessary, for example, a quote, or specific sections of the reference you wish to highlight such as tables, figures, algorithms:
...see [12, Example 1].