Analysis of information sources in references of the Wikipedia article "Break of gauge" in English language version.
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: the source is only accessible via a paid subscription ("paywall").{{cite journal}}
: CS1 maint: multiple names: authors list (link){{cite web}}
: CS1 maint: archived copy as title (link)subscription
: the source is only accessible via a paid subscription ("paywall").subscription
: the source is only accessible via a paid subscription ("paywall").