TY - RPRT TI - General methods and materials. AU - G Seufert AU - V Hoyer AU - H Wöllmer AU - U Arndt PY - 1990 DO - 10.1016/0269-7491(90)90028-b UR - https://pubmed.ncbi.nlm.nih.gov/15092174/ ID - 15092174 ER -