Universal lossless data compression with side information by using a conditional MPM grammar transform. - En-Hui Yang; Alexei Kaltchenko; John C. Kieffer (IEEE Trans. Inf. Theory, 2001)

Universal compression of ergodic quantum sources. - Alexei Kaltchenko; En-Hui Yang (Quantum Inf. Comput., 2003)

Universal non-destructive estimation of quantum relative entropy. - Alexei Kaltchenko (ISIT, 2004)

Algorithms for Estimating Information Distance with Application to Bioinformatics and Linguistics - Alexei Kaltchenko (CoRR, 2004)

Temperature dependence of IDDQ distribution: application for thermal delta IDDQ testing. - Alexei Kaltchenko; Oleg Semenov (IET Circuits Devices Syst., 2007)

Entropy estimators with almost sure convergence and an O(n-1) variance. - Alexei Kaltchenko; Nina Timofeeva (Adv. Math. Commun., 2008)

Bias Reduction of the Nearest Neighbor Entropy Estimator. - Alexei Kaltchenko; Nina Timofeeva; Eugeny A. Timofeev (Int. J. Bifurc. Chaos, 2008)

Bias reduction via linear combination of nearest neighbour entropy estimators. - Alexei Kaltchenko; Nina Timofeeva (Int. J. Inf. Coding Theory, 2009)

Nearest-neighbor entropy estimators with weak metrics. - Evgeniy A. Timofeev; Alexei Kaltchenko (Adv. Math. Commun., 2014)

Assessing GPT Model Uncertainty in Mathematical OCR Tasks via Entropy Analysis. - Alexei Kaltchenko (CoRR, 2024)

Entropy Heat-Mapping: Localizing GPT-Based OCR Errors with Sliding-Window Shannon Analysis. - Alexei Kaltchenko (CoRR, 2025)