OXIDATIVE REACTIONS OF AZINES. 11. THE INFLUENCE OF MANGANESE DIOXIDE ON THE REACTION OF TETRAHYDROPYRIDINES WITH FORMALDEHYDE: SYNTHESIS AND MOLECULAR STRUCTURES OF 3-OXA-7-AZABICYCLO[3.3.1]- AND 6-OXA-2-AZABICYCLO[3.2.1]OCTANES Article Soldatenkov A.T., Polyanskii K.B., Temesgen A.V., Sergeeva N.D., Vysotskaya V.V., Averkiev B.B., Antipin M.Yu., Lobanov N.N. Chemistry of Heterocyclic Compounds. Латвийский институт органического синтеза Латвийской академии наук / Springer New York Consultants Bureau. Vol. 40. 2004. P. 641-649