Vladimir Rovenski is a Professor at the University of Haifa, Israel. He holds a PhD in Mathematics from the Russian Academy of Sciences (1994). His research interests lie in differential geometry, submanifolds, foliations, and applied mathematics.Pawel Walczak is a Professor at the University of Lodz, Poland. He holds a PhD from the Polish Academy of Sciences (1974). His research focuses on differential geometry, foliations, and generalized dynamical systems.Robert Wolak is an Associate Professor at the Institute of Mathematics of Jagiellonian University, Poland. He holds a PhD in Mathematical Sciences from Jagiellonian University (1982). He does research in differential geometry, foliation theory, and differential topology.