Gjuhësi Ballkanike

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Secondly, one should try to establish a relative and absolute chronology for each balkanism. In
this case, too, one encounters difficulties particularly for the Albanian and Rumanian
languages.(14).
Thirdly, for each balkanism one should take into account its geographical extension in each
Balkan language.(15).
Fourthly, one should not exclude the possibility of a parallel development in some cases. In
such cases, the common factor should not be sought unconditionally in the substratum. At any
rate, one should take into consideration that the influence of the substratum may have been
direct or indirect.(16).
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