Brecht R., Popovych D.R., Bihlo A. and Popovych R.O.,
Improving physics-informed DeepONets with hard constraints,
arXiv:2309.07899, 15 pp.
Popovych D.R., Flags of subalgebras in contracted Lie algebras,
Reports of the National Academy of Sciences of Ukraine (2021), no. 4, 917. (in Ukrainian)
Popovych D.R., Canonical forms for matrices of Saletan contractions,
J. Phys.: Conf. Ser. 621 (2015), 012012, 10 pp., arXiv:1507.00781.
Popovych D.R., Contractions with necessarily unbounded matrices,
Linear Algebra Appl. 458 (2014), 689698, arXiv:1401.5456.
Popovych D.R. and Popovych R.O., Lowest dimensional example on non-universality of generalized InönüWigner contractions, J. Algebra 324 (2010), 27422756, arXiv:0812.1705.
Popovych D.R. and Popovych R.O., Equivalence of diagonal contractions to generalized IW-contractions with integer exponents, Linear Algebra Appl. 431 (2009), 10961104, arXiv:0812.4667.
Popovych D.R., A contraction between Lie algebras with necessarily singular components of the contraction matrix, Reports of the National Academy of Sciences of Ukraine (2014), no. 7, 2935. (in Ukrainian)
Popovych D.R., Generalized IW-contractions of low-dimensional Lie algebras, Proceedings of the Sixth International Workshop ``Group Analysis of Differential Equations and Integrable Systems" (Protaras, Cyprus, June 1721, 2012), University of Cyprus, Nicosia, 2013, pp. 179191.