Authors: M Zan-Kowalczewska; M Bretner; H Sierakowska; E Szczesna; W Filipowicz; A J Shatkin Journal: Nucleic Acids Res Date: 1977-09 Impact factor: 16.971
Authors: E C Koper-Zwarthoff; R E Lockard; B Alzner-deWeerd; U L RajBhandary; J F Bol Journal: Proc Natl Acad Sci U S A Date: 1977-12 Impact factor: 11.205