MASS SPECTROMETRIC STUDY OF 4-AZAFLUORENES Article Zvolinskii V.P., Zakharov P.I., Shevtsov V.K., Varlamov A.V., Pleshakov V.G., Vasil'ev G.A., Prostakov N.S. Chemistry of Heterocyclic Compounds. Латвийский институт органического синтеза Латвийской академии наук / Springer New York Consultants Bureau. Vol. 14. 1978. P. 200-203
AN ALL-PURPOSE DILATOR ON A FLEXIBLE WIRE FOR TRANSATRIAL MITRAL AND TRICUSPIDAL COMMISSUROTOMY Article Lapkin K.V. Grudnaya Khirurgiya. Vol. 20. 1978. P. 38-41