TY - JOUR TI - Theoretical and mathematical physics is 30 years old JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1999 SP - 3 VL - 121 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1999_121_1_a0/ LA - ru ID - TMF_1999_121_1_a0 ER -