array(2) { [0]=> int(0) [1]=> array(12) { ["ref_doc_id"]=> int(9614086) ["publisher_code"]=> int(54) ["base_code"]=> int(31) ["book_code"]=> int(1) ["page"]=> string(3) "123" ["sort"]=> int(326) ["body"]=> string(69) "1) Frank, O.:Zur Dynamik des Herzmuskels. Ztschr. Biol. 32:370, 1895." ["mol"]=> NULL ["pubmed"]=> NULL ["doi"]=> string(24) "10.1002/mmnd.48018950227" ["group_id"]=> int(3) ["internal_flag"]=> bool(false) } }