1. Kemppainen J. T., Siljander J., Vergara V., Zacher R.: Decay estimates for time-fractional and other non-local in time subdiffusion equations in Rd. Math. Ann. 366 (2016), no. 3-4, 941–979.
  2. Kemppainen J. T., Nazarov S. A., Ruotsalainen, K. M.: Perturbation analysis of embedded eigenvalues for water-waves. J. Math. Anal. Appl. 427 (2015), no. 1, 399–427.
  3. Korhonen L., Maikkola M., Kaasila R.: Motivation for Maintaining a Constant Workload During a Mathematics Course for Engineers, WSEAS Transactions on Advances in Engineering Education, Vol. 12 (2015), pp. 74-85
  4. Nazarov S.A., Ruotsalainen K. and Taskinen J.; Spectral gaps in the Dirichlet and Neumann problems on the plane perforated by double-periodic family of circular holes, Journal of Mathematical Sciences, Vol. 181, No.2, pp. 164-222, 2012 (DOI: 10.1007/s10958-012-0681-y).
  5. L. Korhonen and K. Ruotsalainen; Diffusion Tracking Algorithm for Image Segmentation, IGMAP and WINSYS 2012 - Proceedings of the International Conference on Signal Processing and Multimedia Applications and International Conference on Wireless Information Networksand Systems, Rome, Italy, 24-27 July, 2012.
  6. G. Cardone, S.A. Nazarov, K. Ruotsalainen; Asymptotics of an eigenvalue in the continuous spectrum of a converging waveguide (in Russian), Mat. Sbornik, Vol. 203, No. 2, 2012 (Engl. translation: Asymptotic behaviour of an eigenvalue in the continuous spectrum of a narrowed waveguide, Mat. Sb. Vol. 203, 2012).
  7. Nazarov S.A., Ruotsalainen K. and Taskinen J.; Gaps in the spectrum of the Neumann problem in the perforated plane (in Russian), Dokl. Russ. Akad. Nauk. Vol. 444, No. 2, p. 151-156, 2012. (English transl.: Doklady Mathematics, 2012, Vol. 86, No.1, pp. 574-578).
  8. G. Cardone, S.A. Nazarov, K. Ruotsalainen; Bound states of a converging quantum waveguide, ESAIM: Mathematical modelling and Numerical Analysis, vol. 47 (2013), p. 305-315 (DOI: 10.1051/m2an/2012033).
  9. F.L. Bakharev, S.A. Nazarov, K. Ruotsalainen; A gap in the spectrum of the Neumann-Laplacian on a singularly perturbed periodic waveguide, Appl. Anal., 92, issue 3, 2013 (
  10. V. Chiad\'o Piat, S.A. Nazarov, K. Ruotsalainen; Spectral gaps for water waves above a corrugated bottom, Proc. Royal Soc. London A (2013), vol. 469, article no. 2149 20120545 (doi: 10.1098/rspa.2012.0545).
  11. S.A. Nazarov, K. M. Ruotsalainen and P. Uusitalo; The Y-junction of quantum waveguides, accepted for publication in Zeitschrift fũr Angewandte Mathematik und Mechanik.
  12. M. Hamina and M. Peltola, Least central subtrees, center, and centroid of a tree, Networks, {57} (2011), 328--332.
  13. M. Hamina, A. Lankinen and M. Peltola; Eccentricity in the joinsemilattice graph of subtreesAdvances and Applications in Discrete Mathematics, Vol. 13, pp. 117--142 2014.


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