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I am somewhat confused as to the use of the apostrophe in two cases:

* I am almost certain that one is needed in a title of a chapter of a document i am writing, specifically:
"Robotics platforms' overview". Am i right?
* When quoting the work of several people do i use one apostrophe, or one for each contributor? Is it correct to say: "Mato, Long and Monda’s opinion" or do i need to say: "Mato's, Long's and Monda’s opinion"? (All of them are the contributors to a single book)

Thank you in advance.
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I believe the first example needs an apostrophe [if, indeed, platforms can own something].

For the second example, I'm sure that opinions vary. I find the construction quite awkward and would avoid the problem by saying, "the opinion of Matol Lond and Monda".
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Hi InViVe:
InViVe* I am almost certain that one is needed in a title of a chapter of a document i am writing, specifically:
"Robotics platforms' overview". Am i right?
I woould not use an apostrophe because it is not possessive (the overview is not owned by the platforms, it is what the overview is about.). Platforms is an adjective describing the overview.
InViVe* When quoting the work of several people do i use one apostrophe, or one for each contributor? Is it correct to say: "Mato, Long and Monda’s opinion" or do i need to say: "Mato's, Long's and Monda’s opinion"? (All of them are the contributors to a single book)
Just use one apostrophe, on the last name in a list.
Regards,
A-Emotion: stars