Bulgarian air traffic controllers will go on strike on September 3 demanding higher pay , the chief of the Bulgarian association of air traffic controllers ( Bulatka ) said on Monday .
<response> <misc>Bulgarian</misc> air traffic controllers will go on strike on September 3 demanding higher pay , the chief of the <misc>Bulgarian</misc> association of air traffic controllers ( <organization>Bulatka</organization> ) said on Monday . </response>