Transformation of nonlinear discrete-time state equations into the observer form: revision; pp. 1–5

On the joint continuity of module multiplication; pp. 6–16

Solitary waves, shock waves and conservation laws with the surface tension effect in the Boussinesq equation; pp. 17–29

Performance analysis of WSN–FSO system modeled by Gamma–Chi-square channel distribution; pp. 30–40

Restoration of eelgrass (Zostera marina) in Estonian coastal waters, Baltic Sea; pp. 41–54

Classifying cubic symmetric graphs of order 52p²; pp. 55–60

Algebra with ternary cyclic relations, representations and quark model; pp. 61–76

Generalized approach to Galileo’s swiftest descent problem on a circle; pp. 77–95

δ-r-hyperideals and φ-δ-r-hyperideals of commutative Krasner hyperrings; pp. 96–103