Review by MrP

General remarks

Very relevant topic, thorough and well researched article
Good sample of references and links to other material
Some general advice for improvement of the article: 1)Make it clearer for the reader if "requirements engineering" should be understood as a well defined discipline and a coherent standard method of practice resembling e.g. Systems engineering, or is it just a collective term for a set of useful tools ? 2) Consider making your introduction/abstract and discussion/conclusion a bit sharper and mutually coherent

Below please find som specific remarks, adressing particular sections in your article

Second sentence: Are you referring to requirements as "formalities"? Difficult to understand.
See also general remark, consider rephrasing the paragraph to set the scene for your article better

First sentence: You write that requirements defines the stakeholders, users and customers - is it not the other way round ?
Second sentence: You state the importance of understanding the requirements "completely and unambiguously. That is probably the core of requirements management and requirements "engineering", therefore you should consider elaborating the statement at this point in the article, maybe referring to the section "Req. elicitation" later in the article
Sentences no. 8 and 9 are difficult to understand, consider rephrasing

In general, this section (and even the header) is a bit difficult to understand.
As mentioned in the general remarks you indicate that "requirements engineering" is a defined discipline or process, but you do not elaborate on or describe it's definition
What is the point of your references to software development issues in the first half of the paragraph?
It is a good idea to give examples like the one of the railway system, but the point is difficult to grasp