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Alexander Petkov

Observed names: A Petrakiev Petkov, A. P. Petkov, A. Petkov, A. Petrakiev Petkov, A.P. Petkov, Aleksandar Petkov, Alex Petkov, Alexander P. Petkov, Petkov, Alexander
Observed institutions: University of Vienna, US Forest Service, Aarhus University, Technical University of Sofia, Institute for Technical Physics and Materials Science, Rocky Mountain Research Station, Sofia University "St. Kliment Ohridski", Hungarian Academy of Sciences
ORCID: 0000-0003-4107-0948
Observed ORCID: 0000-0003-4107-0948
OpenAlex ID: A5101466990
Lifetimes of some excited states in the rare earths: La ii, Ce ii, Pr ii, Nd ii, Sm ii, Yb i, Yb ii, and Lu ii
1975 · T. Andersen, O. Poulsen, et al. · Solar Physics · 103
Fire emissions estimates in Siberia: evaluation of uncertainties in area burned, land cover, and fuel consumption
2012 · Elena A. Kukavskaya, Amber J. Soja, et al. · Canadian Journal of Forest Research · 93
Daily black carbon emissions from fires in northern Eurasia for 2002–2015
2016 · Wei Min Hao, Alex Petkov, et al. · Geoscientific model development · 40
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The Sharp Lower Bound of the First Eigenvalue of the Sub-Laplacian on a Quaternionic Contact Manifold
2012 · S. Ivanov, A. Petkov, et al. · Journal of Geometric Analysis · 23
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Determination of smoke plume and layer heights using scanning lidar data
2009 · Vladimir A. Kovalev, Alexander Petkov, et al. · Applied Optics · 21
Lifetimes of Excited Levels in MgIII, CaIII, KIV–V, CaV, and Ge I
1975 · T Andersen, A Petrakiev Petkov, et al. · Physica Scripta · 21
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Wetter environment and increased grazing reduced the area burned in northern Eurasia from 2002 to 2016
2021 · Wei Min Hao, Matthew C. Reeves, et al. · Biogeosciences · 19
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HKT Manifolds with Holonomy SL(n,H)
2011 · Stefan Ivanov, Alexander Petkov · International Mathematics Research Notices · 18
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The sharp lower bound of the first eigenvalue of the sub-Laplacian on a quaternionic contact manifold in dimension seven
2013 · S. Ivanov, A. Petkov, et al. · Nonlinear Analysis · 13
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Modified technique for processing multiangle lidar data measured in clear and moderately polluted atmospheres
2011 · Vladimir Kovalev, Cyle Wold, et al. · Applied Optics · 12
The Obata sphere theorems on a quaternionic contact manifold of dimension bigger than seven
2017 · Stefan Ivanov, Alexander Petkov, et al. · Journal of Spectral Theory · 9
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Lidar monitoring of regions of intense backscatter with poorly defined boundaries
2010 · Vladimir A. Kovalev, Alexander Petkov, et al. · Applied Optics · 8
Th II meanlife and the solar thorium abundance.
1975 · T. Andersen, Alexander Petkov · 8
Alternative method for determining the constant offset in lidar signal
2009 · Vladimir A. Kovalev, Cyle Wold, et al. · Applied Optics · 7
The qc Yamabe problem on non-spherical quaternionic contact manifolds
2018 · Stefan Ivanov, Alexander Petkov · Journal de Mathématiques Pures et Appliquées · 6
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Direct multiangle solution for poorly stratified atmospheres
2012 · Vladimir Kovalev, Cyle Wold, et al. · Applied Optics · 5
The Riemannian curvature identities for the torsion connection on Spin(7)${\rm Spin}(7)$—Manifold and generalized Ricci solitons
2025 · Stefan Ivanov, Alexander Petkov · Mathematische Nachrichten · 4
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Use of Time-resolving High Resolution Spectroscopy in the Investigation of Pulse Hollow-cathode Discharges
1979 · S. Z. Mohamad, A. P. Petkov · Le Journal de Physique Colloques · 4
Daily black carbon emissions data from fires in Northern Eurasia for 2002–2015
2016 · Wei Min Hao, Alexander Petkov, et al. · Forest Service Research Data Archive · 3
Determination of the smoke-plume heights with scanning lidar using alternative functions for establishing the atmospheric heterogeneity locations
2010 · Vladimir A. Kovalev, Alexander Petkov, et al. · 3
Parallel torsion and $$G_2, Spin(7)$$ instantons
2026 · Stefan Ivanov, Alexander Petkov, et al. · Revista Matemática Complutense · 2
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The almost Schur Lemma in quaternionic contact geometry
2023 · Stefan Ivanov, Alexander Petkov · Revista de la Real Academia de Ciencias Exactas Físicas y Naturales Serie A Matemáticas · 2
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A software metric for the evaluation of testing efficiency
2016 · Alexander Petkov · AIP conference proceedings · 2
Li-Yau sub-gradient estimates and Perelman-type entropy formulas for the heat equation in quaternionic contact geometry
2024 · Ivanov, Stefan, Petkov, Alexander · arXiv (Cornell University) · 1
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A heat equation on a quaternionic contact manifold
2016 · Ivanov, Stefan, Petkov, Alexander · arXiv (Cornell University) · 1
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Works count: 46
Citation count: 431
H-index: 10
I10-index: 10
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