Citations of 2 first Aragats Space Environmental Center (ASEC) papers on Thunderstorm Ground Enhancements (TGEs) exceeds 300 according to GoogleScholar
“Citations are an acknowledgement of intellectual debt.”
- Henry Small
A scientifically written article comprises a reference section at the end where all the references mentioned in the document are cited serially, and each reference is a citation. A citation count is the frequency of an article cited by other articles. A citation index is a kind of bibliographic database, an index of citations between publications, allowing the user to easily establish which later documents cite which earlier documents. Citation index provides journal ranking by giving information about what articles, themes, and topics were being published, cited, or ignored and also offers unique insight into a particular journal and provides data on historical trends, immediacy index, cited half-life of journals, etc.  Citation analysis helps to know the Journal Impact Factor (JIF), Author Self- Citation (ASC) and Journal Self-Citation (JSC). Citation index also helps to determine the utmost important areas of research and the world leaders in definite scientific disciplines. Citation analysis has shown that some 90% of papers that have been published in academic journals are never cited  . The scientific Citation Index (SCI) originally was produced by the Institute for Scientific Information (ISI) and was officially launched in 19644 and provided intellectual foundation for the wide variety of citation indexing products emerging as competitors to what has become the Web of Science (WoS)5 . Now there are many competitors providing online citation indices . One of them is Scopus (http://www.scopus.com/) developed by Elsevier and the other is the freely available Google Scholar (http://scholar.google.com/). Scopus and Google Scholar on average have a higher citation score than WoS, the difference is rather large, reaching 30-40% between Google Scholar and WoS. However, the Google Scholar is easier to access, it is rather user friendly, and is used widely as universal metric for different purposes. CRD publications help to establish a new scientific direction high-energy physics in the atmosphere, reporting enhanced fluxes of electrons, gamma rays, and neutrons; energy spectra of electrons and neutrons; origin of the electron accelerator in the thunderclouds, atmospheric conditions supported the operation of this accelerator and many other discoveries.
Ground-based observations of thunderstorm-correlated fluxes of high-energy electrons, gamma rays, and neutrons
A Chilingarian, A Daryan, K Arakelyan, A Hovhannisyan, B Mailyan, L Melkumyan, G Hovsepyan, S Chilingaryan, A Reymers, L Vanyan 2010/8/23 Physical Review D, 82, 043009
The Aragats Space Environmental Center facilities continuously measure fluxes of neutral and charged secondary cosmic ray incidents on the Earth’s surface. Since 2003 in the 1-minute time series we have detected more than 100 enhancements in the electron, gamma ray, and neutron fluxes correlated with thunderstorm activities. During the periods of the count rate enhancements, lasting tens of minutes, millions of additional particles were detected. Based on the largest particle event of September 19, 2009, we show that our measurements support the existence of long-lasting particle multiplication and acceleration mechanisms in the thunderstorm atmosphere. For the first time we present the energy spectra of electrons and gamma rays from the particle avalanches produced in the thunderstorm atmosphere, reaching the Earth’s surface.
Cited by 200
Particle bursts from thunderclouds: Natural particle accelerators above our heads
Ashot Chilingarian, Gagik Hovsepyan, Armen Hovhannisyan 2011/3/1 Physical review D, 83, 062001
Strong electrical fields inside thunderclouds give rise to fluxes of high-energy electrons and, consequently, gamma rays and neutrons. Gamma rays and electrons are currently detected by the facilities of low orbiting satellites and by networks of surface particle detectors. During intensive particle fluxes, coinciding with thunderstorms, series of particle bursts were detected by the particle detectors of Aragats Space Environmental Center at an altitude of 3250 m. We classify the thunderstorm ground enhancements in 2 categories, one lasting microseconds, and the other lasting tens of minutes. Both types of events can occur at the same time, coinciding with a large negative electric field between the cloud and the ground and negative intracloud lightning. Statistical analysis of the short thunderstorm ground enhancement bursts sample suggests the duration is less than 50 μ s and spatial extension is larger than 1000 m …
Cited by 103
 Citation index, http://en.wikipedia.org/wiki/ Citation index.
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Garfield, E., Citation indexes for science – New dimension in documentation through association of ideas. Science, 1955, 122, 108–111.
 Atkins, H., The ISI web of science – Links and electronic journals; How links work today in the Web of Science, and the challenges posed by electronic journals. D-LIB Mag., 1999, 5,