VarrĂ³ AndrĂ¡s;  Negretti N;  Hester SB;  Eisner David A: An estimate of the calcium content of the sarcoplasmic reticulum in rat ventricular myocytes.
  PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY, 423 (1-2).  pp. 158-160.  ISSN 0031-6768 (1993)