The first (spring) issue of the Volume 7 of the CRORR journal is published! It brings 10 original scientific papers from the area of operational research. The first paper authored by Goran Lesaja and Mustafa Ozen is one of invited papers that journal occassionaly publish. It is dedicated to Luka Neralic on the occassion of his 70th birthday. The authors of other papers are from Nigeria, Iran, Slovakia, USA, and Croatia. See all papers from this issue at our journal Archive.