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http://star.arm.ac.uk/~csj/papers/conference/iauc185_v652.ps.
1. Armagh Observatory Preprint No. 306
... We present an analysis of an optical blue spectrum of the pulsating helium star V652 Her (=BD+13 3224$) in order to determine its effective temperature, surface gravity and chemical composition. ... The surface composition is characterised by abundances of nH=0.009, He=0.988, nC~0.000040, nN=0.0025 and nO=0.00010 (number fractions). ... If V652 Her was formed by the merger of two white dwarfs, its surface composition demands that they should both be helium white dwarfs. ...
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Ссылки http://star.arm.ac.uk/~ambn/abstract306.html -- 3.5 Кб -- 09.02.1999
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2. http://star.arm.ac.uk/ext_no.html
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Ссылки http://star.arm.ac.uk/ext_no.html -- 1.3 Кб -- 24.07.2012
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3. Fortran and Pascal
Fortran is a simple language . Fortran has always existed . Fortran compilers are generally available . Earlier the first programming language . ... Good at numerical analysis and technical calculations . ... A large number of programs and routines in Fortran are exchanged internationally . ... Fortran doesn't have reserved words, it has short identifiers, the identifiers do not have to be specified . ... Fortran programs are usually less well structured then Pascal programs . ...
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Ссылки http://star.arm.ac.uk/f77to90/a1.html -- 3.6 Кб -- 10.02.1996
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