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Reports on Mathematical Physics > 2014 > 73 > 1 > 109-125
Mathematical Methods in the Applied Sciences > 47 > 6 > 4283 - 4305
Opuscula Mathematica > 2023 > Vol. 43, no. 6 > 789--801
Asian Journal of Control > 24 > 3 > 1143 - 1151
Opuscula Mathematica > 2022 > Vol. 42, no. 3 > 393--413
Opuscula Mathematica > 2022 > Vol. 42, no. 6 > 769--791
Natural Resource Modeling > 34 > 3 > n/a - n/a
Mathematical Methods in the Applied Sciences > 44 > 13 > 10210 - 10224
Mathematical Methods in the Applied Sciences > 44 > 9 > 7442 - 7454
Mathematical Methods in the Applied Sciences > 44 > 6 > 4316 - 4329
Opuscula Mathematica > 2021 > Vol. 41, no. 5 > 613--627
Biometrics > 76 > 3 > 886 - 899
Mathematical Methods in the Applied Sciences > 42 > 16 > 5274 - 5292
Mathematical Methods in the Applied Sciences > 42 > 16 > 5498 - 5508
Journal of Economic Structures > 2019 > 8 > 1 > 1-10
Advances in Difference Equations > 2019 > 2019 > 1 > 1-32
Results in Mathematics > 2019 > 74 > 4 > 1-16
Advances in Difference Equations > 2019 > 2019 > 1 > 1-11
Indian Journal of Pure and Applied Mathematics > 2019 > 50 > 2 > 385-401
Mathematical Methods in the Applied Sciences > 42 > 9 > 2974 - 2992