1998 HANS-GILL, Rajinder Jeet (b. 1943) Ph.D.(USA),F.A.Sc.,F.N.A.,F.T.W.A.S., Emeritus Professor & INSA Honorary Scientist, CAS in Mathematics, Panjab University, Chandigarh – 160014; Res. 1611, Sector 44B, Chandigarh – 160047; Tel: 0172-2541132(O), 2624837(R) Email: ; ; Sp. Geometry of Numbers.