The first important physical result was obtained by CRD scientists some 10 years ago [3]: it was convincingly shown that the position of the "knee" is charge-dependent. This finding was later on independently confirmed by KASKADE data [3]. This result by YerPhi scientists provided a definite argument in favor of the scenario, where cosmic rays are accelerated due to multiple interaction withshock-waves produced in SNRs (Supernovae remnants) [4].


References.

[1] Chilingarian A. A., Statistical Decisions under Nonparametric a
priori information, Computer Physics Comunication, 54, 381, 1989.

[2] A.Chilingarian, G.Zazyan, On the possibility of investigation of
the mass composition and energy spectra of primary cosmic ray (PCR) in
the energy range from 1015 to 1017 eV using EAS data, Nuovo Cimento C,
Serie 1 (ISSN 0390-5551), vol. 14 C, Nov.-Dec. 1991, p. 555-568,
http://adsabs.harvard.edu/abs/1991NCimC..14..555C

[3] A.Chilingarian , G. Gharagyozyan , G. Hovsepyan , S. Ghazaryan ,
L. Melkumyan , and A. Vardanyan , Light and Heavy Cosmic Ray Mass
Group Energy Spectra as Measured by the MAKET-ANI Detector,
Astrophysical Journal, 603:L29-L32, 2004,
http://iopscience.iop.org/1538-4357/603/1/L29/fulltext/

[4] A.Chilingarian , G. Gharagyozyan , G. Hovsepyan , S. Ghazaryan ,
L. Melkumyan , A. Vardanyan, E.Mamidjanyan, V.Romakhin,  and S.
Sokhoyan Study of extensive air showers and primary energy spectra by
MAKET-ANI detector on Mount Aragats, Astroparticle Physics, Volume 28,
Issue 1, September 2007, Pages 58–71
http://www.sciencedirect.com/science/article/pii/S0927650507000552