المؤلفون: Aahlin, P., Frodesen, A. G., Alpgåed, K., Hulth, P. O., Svedin, U., Yamdagni, N., Hagman, V.-M., Tuominiemi, J., Villanen, P.

المصدر: Lettere Al Nuovo Cimento Series 2 ; volume 21, issue 7, page 236-238 ; ISSN 1827-613X

الاتاحة: http://dx.doi.org/10.1007/bf02763069
http://link.springer.com/content/pdf/10.1007/BF02763069.pdf
http://link.springer.com/article/10.1007/BF02763069/fulltext.html
http://link.springer.com/content/pdf/10.1007/BF02763069