In this year  I had  established some properties on the Generalized Krein parameter of a strongly regular graph in publication (1) and I had established some bounds on the Krein parameters of a symmetric association scheme  in the publication (2). Finally I had established a liason between Euclidean Jordan algebras and strongly regular graphs in the Book Strongly Regular Graphs and Euclidean Jordan Algebras: Revelations within an Unusual Relationship
Lambert Academic Publishing, 2015 .

(1) Luis Vieira, Vasco Moço, Mano, Generalized Krein parameters of a strongly regular graph, Applied mathematics, Vol.6 nº 1, pp.37-45, 2015.

(2) Vasco Moço Mano, Luis Vieira , Symmetric association schemes and generalized Krein parameters, International Journal of Mathematical Models and Methods in Applied Sciences, Vol.9, pp.310-314, 2015